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ELECTRONICS


ELECTRICITY/MAGNETISM FUNDAMENTALS

1. Whenever a flux inking a coil or current changes, an emf is induced in it.
FARADAYS FIRST LAW OF ELECTROMAGNETIC INDUCTION

2. The magnitude of the induced emf in a coil is directly proportional to the rate of change of
flux.
FARADAYS SECOND LAW OF ELECTROMAGNETIC INDUCTION

3. In intrinsic semiconductor, formation of holes and free electrons that increases in
temperature is known as
THERMAL CARRIER

4. conductor stationary
MAGNETIC MOVING STATICALLY INDUCED EMF

5. In group of atoms, the energy level depends on close proximity of atoms
ENERGY BAND/BOND

6. Ratio of numbers of atoms in an isotope of the same element in a given sample.
ABSORPTION RATIO

7. The reason why electrons are not pulled into the nucleus of an atom
CENTRIFUGAL FORCE/OUTWARD FORCE

8. Magnetic fields do not intersect with ______
STATIONARY ELECTRIC CHARGE

9. capacitor current leads voltage
BY 90 DEGREES

10. Inductor for an AF, 400 Hz
Toroidal

11. The force of attraction or repulsion between two magnetic poles is directly proportional to
their strengths.
COULOMBS FIRST LAW

12. Formed when there exist distant electronic interactions between (opposite) charges
present in the neighboring atoms or molecules.
VAN DER WAALS BOND

13. Direction of Magnetic field in a conductor
FLEMING'S LEFT HAND RULE

14. double(voltage),half(resistance)
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4 TIMES AS GREAT(CURRENT)

15. In resistor circuits, the connection that has greater power dissipation is ________
connection.
BOTH SERIES AND PARALLEL

16. The square root of the ratio of line impedance and shunt admittance is called _______
of the line.
SURGE IMPEDANCE

17. the most common type of crystal defect
LINE DEFECT

18. In DC circuit, if the voltage is doubled, the resistance is halved, the current will?
FOUR TIMES AS GREAT
19. Holes and Electrons should overcome the electrostatic force, another name for
electrostatic field is
Barrier

20. A formula for the overall transmittance of a signal flow graph in terms of transmittances of
various paths in the graph.
MASONS THEOREM

21. A regulator that maintains the output voltage where the current drops to resistor in series
with the load
SHUNT REGULATOR

22. What is the type of linear regulator used in applications requiring efficient utilization
of the primary power source?
SERIES REGULATOR

23. In pure silicon, the holes and electrons are in _____.
EQUAL NUMBER

24. Unit of insulation resistance
MEGGER

25. A parallel conductor has. . . in what direction?
OPPOSITE DIRECTION

26. Oppose the creation of magnetic field
RELUCTANCE

27. maglalagay ng ion
ION IMPLANTATION

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28. Ability of a material to produce magnetic lines and inherit with other magnetic field-
magnetism?
MAGNETISM

29. Theory of ferromagnetic phenomena which assumes each atom is a permanent magnet
which can turn freely about its center under the influence of applied field and other
magnets.
EWINGS THEORY OF FERROMAGNETISM

30. Why is it that the magnitude of magnetomotive force required for air gap is much greater
than that required for iron part of a magnetic circuit?
BECAUSE AIR HAS THE LOWEST RELATIVE PERMEABILITY

31. depletion is caused by
IONIZATION, RECOMBINATION, DIFFUSION

32. The basic operation of the accelerometer is based on what physical property?
INERTIA

33. A liquid crystal . . . liquid like
NEMATIC

34. Generation of voltage occurs when there is a movement between the connecting wires and
MAGNETIC LINES OF FORCE

35. The ratio of the permeability of a material to the permeability of vacuum/ free space
RELATIVE PERMEABILITY

36. In PNP circuit, the emitter is heavily doped and the base is lightly doped. The flow on the
base is mainly
HOLES

37. the idea of preventing one component to the other component through their common
electric and magnetic fields.
SHIELDING

38. line impedance and admittance
SURGE IMPEDANCE

39. Defect due to missing atom in the lattice
VACANCY DEFECT

40. The ratio of the permeability of material to the permiabiity of air or vacuum
RELATIVE PERMITIVITY

41. Magnetic susceptibility is inversely proportional to temperature
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CURIE EFFECT

42. Difference between kinetic energy of electron and electrostatic potential energy
BINDING ENERGY

43. Attracts electrons towards itself
ELECTRONEGATIVITY

44. 0.375 kW dc shunt motor
FLUX CONTROL

45. A magnetic field when applied to a right angle to the directions of a temperature gradient
in a conductor, a temperature diff. is produced at right angles both to the direction of a
temperature gradient and the direction of the magnetic field
LEDUC

46. A law that state that the current in a thermionic diode varies directly with the three- halves
power of anode voltage and inversely with the square of the distance between the
electrodes, provided operating conditions are such that the current is limited only by the
space change.
CHILD'S LAW

47. a two fermion ..anti-symmetric
PAULI-EXCLUSION PRINCIPLE

48. Intrinsic semiconductors have covalent bonds that form ____ structure.
TETRAHEDRAL
49. Concentration of in P-type than N-type
HOLES


ELECTRICAL CIRCUIT

50. no depletion
SCHOTTKY DIODE

51. what action results in the increase in current that generates more heat and the cycle
repeat itself until the diode draws excessive current?
THERMAL RUNAWAY

52. Most valid diode check test is by using diode test.
dynamic electric

53. Schottky diode is commonly use than other diode because____ delay
LOWER PROPAGATION

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54. Connection of resistors that will have high voltage gain
BOTH PARALLEL AND SERIES CONNECTION

55. If the V
GS
is zero the current flowing is
I
DS

56. series-parallel resistors will give a higher ___ than a single resistor alone.
POWER RATING

57. In full-wave rectifier, the ripple voltage is _____the half-wave circuit.
TWICE THAN THAT OF

58. allows to be used as a voltmeter, an ammeter, or an ohmmeter
VOM

59. The effects used in ammeter: a.) thermal, b.) magnetic, and _____
ELECTROMAGNETIC INDUCTION

60. A single-phase split capacitor do not have _____ switch.
CENTRIFUGAL

61. Used in stereo compact disc
AUDIO TAPER POTENTIOMETER

62. consists of resistors for constant adjustment ...
LINEAR-TAPER POTENTIOMETER

63. ... motion limit ...
LIMIT SWITCH

64. Capacitors store electical energy as ___.
ELECTRIC FIELD

65. resistor parallel with the load
NORTON'S THEOREM

66. Resistor that is in has a higher power rating
SERIES PARALLEL COMBINATION

67. Prevent excessive current
SNUBBER CIRCUIT

68. Chief reason why digital .
SIMPLIFY THEIR CIRCUITRY

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69. Most commonly used in insulation?..
MAY ISA PA AND HEAT-SHRINKABLE TUBING

SOLID STATE DEVICES/CIRCUIT

70. GaAs and LED can emit light in _____________ region
INFRARED

71. Circuit with stable manner and the load impedance varies
OPTOISOLATOR

72. accurate snap acting switch
MICROSWITCH

73. differentiator (feedback)
THYRECTOR

74. The____of SCR and triac(common)1st and 3rd(triac)2nd quotation(SCR)
VI CHARACTERISTICS

75. The LASCR is used as a
LATCH

76. LASCR acts like
LATCH

77. Advantage of SCR
LEAST PROPAGATION DELAY

78. The dv/dt effect of SCR result to
FALSE TRIGGERING

79. Phototransistor responds like a conventional transistor except that in their case, the light
energy is used to
SWITCH IT ON

80. In measuring transistor ratio gain using ohmmeter, what is indicated by 10-to-1 resistance
ratio?
NORMAL GAIN

81. the frequency region where the bypass and coupling capacitor cannot be used for short
circuit approximation
LOW FREQUENCY

82. The dv/dt effect in an SCR results in ____.
FALSE TRIGGERRING SPEED OF OPERATION
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83. The di/dt effect of SCR
LOCAL HOT SPOT

84. The power efficiency . . .
SWITCH

85. The Q-point on voltage amplifier is selected at the middle of the active region because it
then requires small ____
DC VOLTAGE

86. In transistror, connecting the common emitter has a ____ input resistance and ___ output
resistance
MEDIUM, HIGH

87. The smallest effect of scattering _______ scattering
CRYSTAL IMPERFECTION

88. zener diode connection to regulator
LOW INPUT Z, HIGH INPUT Z

89. voltage gain is unity
VOLTAGE FOLLOWER

90. Configuration of stability of radio frequency . . .
COMMON BASE

91. High input impedance of a mosfet is due to small leakage current in the ________.
GATE TERMINAL

92. Semiconductor are variable _______ properties of any material
CONDUCTIVE

93. LASCR is the same as SCR because they are
LIGHT TRIGGERED DEVICE

94. In emitter the rate of flow is higher if the collector. base current is _______.
DECREASE

95. Junction recombination occurs in the p-type and n-type materials through ____...
DIFFUSION OF ELECTRONS AND HOLES

96. instrument that measures the movement of hot-stirred metals and slabs
INFRARED AND ULTRAVIOLET DEVICES

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97. Achieving low distortion in audio application by using Class B amplifier or two bipolar
transistor or FETs during cut-off or ______ region.
PINCH OFF

98. Field-effect transistors (FETs) depend on variation of ______ on its operation.
DEPLETION LAYER WIDTH REVERSE VOLTAGE

99. conduction of LED is possible through_____________
RECOMBINATION OF CHARGES

100. maximum reverse voltage that will not cause breakdown
DC BLOCKING VOLTAGE

100. Resistor in the base of the transistor
PROPER BIAS

101. the characteristic of the transistor???? can be recognized by the input bias
and_______________.
AMPLITUDE OF THE INPUT SIGNAL

102. commonly used bias .that overcomes the disadvantage of having base current and
self bias and has thermal stability
- COMBINATIONAL BIAS

103. Operating point shall not be on the saturated region because of
THERMAL RUNAWAY

104. Darlington
- MULTI EMITTER TRANSISTOR

105. Darlington
2 ADJACENT TRANSISTOR
106. When Vd reaches the value of the Vp or pinch off voltage, Id( drain current) is
SATURATED

107. Darlington
ENOURMOUS IMPEDANCE

108. emitter-collector.
- OPEN BASETRANSIT TIME

109. class Btwo transistor FET.or_________...
- PINCH-OFF

110. In transistor checking, what method is cumbersome when more than one
transistor is bad in the circuit
SUBSTITUTION METHOD
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111. Time required for an electron or hole to travel from emitter to collector.
Transit time

112. What plays an important role in transistor maintenance because transistor before it is
replaced or tested, lead is identified?
- TRANSISTOR LEAD CONFIGURATION

113. The time taken for the holes or electrons to flow from the emitter to collector?
- TRANSIENT TIME

114. Transistors are in __________ condition when there is no applied input signal. ---
- QUIESCENT
115. queiscent ..
- NO SIGNAL

116. Transistor results in saturation because of
- REDUCES EFFICIENCY

117. LED use gallium because
THEY EMIT MORE LIGHT

118. A multiple-terminal solid-state device similar to a transistor that generates frequencies up
to about 10000 MHz by injecting electrons or holes into a space-charge layer which rapidly
forces these carriers to a collecting electrode.
- SPACISTOR

119. Made from two or more constituents material having a property different in macroscopic
form
- COMPOSITE MATERIAL

120. Distribution of electrons in an atom
- CONFIGURATION OR STUCTURE

121. Between JFET and MOSFET, what is most commonly used because of its wide range of bias
- MOSFET

122. For the operation of an N-type E-MOSFET, the gate voltage should be
HIGH POSITIVE

123. MOSFET breaks in normal handling due to
- LEAKAGE CURRENT AND HIGH INTERNAL RESISTANCE

124. Emitter-base has zero bias or reversed bias and has no collector current
- CUTOFF

125. In the enhancement N-type MOSFET , the gate voltage is
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- VERY HIGH

126. A transistor that is invented in 1950s as an improvement of point contact transistor -
- SPACISTOR

127. current gain in common collector is called
- GAMMA

POWER GENERATORS/SOURCES/PRINCIPLES/APPLICATIONS

128. Full wave rectification has ripple frequency that is ____ of half wave rectifier
TWICE THAT

129. Variable resistance stepper motor use ______ materials in salient point.
Ferromagnetic

130. In T circuit, the capacitor is connected in series while the inductor is connected in parallel,
it used a ______________ filter
HIGH PASS FILTER

131. Manufacturing units consists of two more workstations or machines
- CELL

132. carbon-zinc
- ZINC-CATHODE

133. Type of ac motor which uses inductance and capacitance to start the motor winding
SPLIT-PHASE

134. DC sometimes better than AC in generators, variable-speed motor and
- CHARGING STORAGE BATTERIES

135. Shunt Regulators have ______________turns and ___________ resistance
- MORE AND HIGH

136. A shunt regulator is a linear device that varies the output while the unregulated source is
_______.
- KEPT CONSTANT

137. The reluctance in measuring the transformer . . .
- BE DESTROYED

138. A method in which the charger and battery is always connected to the each other
- FLOAT CHARGING

139. _______ motor has the least starting torque.
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- DC SHUNT

140. The capacitance between the primary and the secondary windings of a transformer can be
minimized
- OPPOSITE SIDES OF THE TOROIDAL CORE

141. A 150 volt DC source connected in the main utility and wall outlet produce a ____ output.
FLUCTUATING DC

142. brushes and commutators
- TORQUE

143. NPN can replace PNP in a circuit provided that ____________ is reversed
- BATTERY POLARITY/ POWERSUPPLY

144. Controls the amount of voltage, current, and power of a voltage regulator
CONTROL ELEMENT

145. Output of Nickel-Iron
- 1.2 V

146. essential parts of rotating generator includes electromagnet/permanent magnet and
ARMATURE WINDING-

147. Winding in DC compound generator consist of fine wires
- SHUNT FIELD WINDING

148. Speed of universal motor is dependent on its ____________
- FREQUENCY


149. There are two alternations in one complete cycle. One is positive, the other is negative.
- SINE WAVE

150. In shunt motor, speed is measured by rheostat connected in series with
- FIELD WINDING

151. High Peak Output, Low Regulation
- CAPACITOR (VOLTAGE) FILTER

152. DC frequency to change AC frequency. . .
- FREQUENCY CONVERTER

153. High speed alternators are usually driven by ___.
- STEAM TURBINE

154. A bidirectional, permanent magnet that gives an increment pulse
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STEPPER MOTOR

155. if a DC motor is running in the wrong direction, the ___ and ___ should be interchanged.
- FIELD, ARMATURE WINDINGS

156. Shunt motors will give off maximum efficiency when the ??? loss is equal to the ___ loss.
- CONSTANT LOSS
-
157. 150V connected to ac outlet
- PULSATING DC

158. Power supplies have large surge currents when turned on because the ___ need to be
charged.
- FILTER CAPACITOR

159. commonly used sa power supply
- ELECTROLYTIC CAPACITOR

160. A bleeder resistor is placed to drain the charge of ____ in a power supply.
FILTER CAPACITOR

161. best filter
- MULTI-SECTION LC CIRCUIT

162. Not a major part of the AC power supply
Regulator
RECTIFIER
Filter

163. What is used to clean up the supply voltage from disturbances such as overvoltage,
undervoltage, spikes and harmonics?
- POWER CONDITIONER

164. Nickel-iron is known as
EDISON CELL

165. Power supply filter gives the smallest ripple
MULTI-SECTION LC FILTER

166. the type of power supply used in the robot system:
Pneumatic power supply
Hydraulic power supply
____________________
Electric power supply

167. Characteristics in choosing motor
SPEED-TORQUE
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ELECTRONIC (AUDIO/RF) CIRCUIT/ANALYSIS/DESIGN

168. In RC phase shift oscillator, the _______ output is possible.
- PURE SINE WAVE

169. Emitter and base junction is reverse bias
- CUT-OFF

170. The current that flows between the collector and emitter junction when the base region is
open
- CUT-OFF CURRENT

171. Network design that allows the frequency above the cut-off is the ______filter.
- HIGH PASS

172. In wireless transmission using broadband RF PA has spurious emission. This spurious
emissions can be reduced by using
- TUNED RF PA.

173. Closed-loop stability is measured by
(1)Routh-Hurwitz Criterion,
(2) Bode diagram, and
(3) _______.
- NYQUIST CRITERION

174. In control system, when we choose to analyze or interpret "steady state sine waves" . . .
- NYQUIST PLOT

175. measures twisted pair continuity
- TDR

176. Noise margin is used to expressed
- VOLT

177. Op- amp operations?
Comparator


Oscillations and signal conditioning

178. integrator (feedback)
- CAPACITOR

179. differentiator (feedback)
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- RESISTOR

180. Ideal Input Resistance of an op amp
- INFINITY
-
181. Ratio of small change in zener voltage to small change in zener current
Zener Dynamic Impedance

182. zener diode can be used as a voltage regulator by
REVERSE - PARALLEL

183. Ideal Input Resistance of an op amp
- INFINITY

184. In AC, number of cycles per second refers to
FREQUENCY

185. Sum of two identical sine waves 180 degrees out of phase
- ZERO


TESTS AND MEASUREMENTS

186. Absorption meter is used to check the _____ of transmitter.
- OUTPUT FREQUENCY

187. acceleration transducer also known
- ACCELEROMETER

188. measures the intensity of light radiation from any part of the sky
PYRANOMETER

189. sensing element made from a thin-walled tube formed into deep convolutions and sealed
at ---
ONE END BELLOW

190. Another term for acceleration transducer.
Accelerometer
191. Measure the angle of slope, slope. . .
- CLINOMETER

192. _____ oscilloscope that uses sampling technique in processing signal that has frequency
beyond its normal range.
SAMPLING OSCILLOSCOPE

193. In analog oscilloscope, steps in accommodating the incoming signals are:
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Attenuating signal
Time base
Triggering the oscillator

194. difference bet the oscillator frequency and the unknown frequency
- BEAT FREQUENCY

195. In ohmmeter, if the anode is connected to the negative probe and the cathode is
connected to the positive probe, the reading is
- INFINITE RESISTANCE

196. An instrument in which the deflection gives the magnitude of electrical quantity measured
directly
- SECONDARY INSTRUMENT

197. What provides a visual presentation of any waveform applied to the input terminals
CATHODE RAY OSCILLOSCOPE

198. The element in the CRT that emits electron when indirectly heated by the filament
CATHODE

199. consists of two coils, one is fixed and one coil is free to rotate
ELECTRODYNAMOMETER

200. Part of the Arsonval meter that controls the current
- HAIRSPRING

201. DArsonval meter can be converted to audio frequency AC ammeter by adding ____ in the
circuit.
- RECTIFIER
202. measure resistance
- WHEATSTONE OR RESISTANCE BRIDGE

203. A high sensitive galvanometer used in physics laboratory
MOVING- MAGNET

204. A method using Wheatstone bridge to determine the distance from the test point to
a fault in a telephone or telegraph line or cable
VARLEY LOOP TEST

205. Bridge independent in frequency
- ANDERSON/ANDERSEN BRIDGE

206. What type of maintenance is used to isolate troubles by means of test techniques and
practices that realign or readjust equipment or otherwise bring the equipment back up to
proper performance?
- CORRECTIVE MAINTENANCE
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207. solder gun
- FILE THE TIP SMOOTH AND RETIN IT

208. Fractured soldered joints are caused by movement of soldered parts during ______
process.
COOLING

209. component of D'Arsonval meter movement completes the circuit for current flow to the
coil
HAIRSPRING

210. most common RF oscillators
HARTLEY & COLPITTS

211. display pattern of oscilloscopes with steady characteristics
- LISSAJOUS

212. Indicating instrument that indicates where the object is oriented
- SELSYN


213. A series RC combination in one arm and a parallel RC combination in a joining arm
- WIEN BRIDGE

214. Characterizes and Locate faults in the metallic cable such as twisted pair
- TIME DOMAIN REFLECTOMETER

215. In meter movement, how do you prevent the meter from oscillation and overswing?
- DAMPING

216. An is used to measure the resistance between the base-emitter, base-collector,
collector-emitter
- OHMMETER

217. device sweeps the band of frequencies to determine frequencies and amplitudes of each
frequency component
- SPECTRUM SYNTHESIZER

218. In transistor during the active load, the configuration of the emitter- base is ________ and
the base- collector is _____________???
Reverse and forward

219. Use to measure resistance of emitter-base, base-collector, emitter-collector resistance of
a transistor
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- TRANSISTOR JUNCTION RESISTANCE TEST

220. The ability of spectrum analyzer to resolve signals is dependent on
- NARROWEST BANDWIDTH

221. Equipment check
- PREVENTIVE MAINTENANCE

222. measurement of temperature by electronic means.. greater range than mercury
- THERMOMETERS PYROMETER

223. An instrument that measures the time of flow of fluid
- SAYBOLT

224. watt-hour meter is an ___.
- INTEGRATING INSTRUMENT

225. the efficiency of class A amplifier can be improved by ___________load
- TRANSFORMER COUPLED

226. 70% efficiency
- CLASS B PUSH-PULL

227. In an inverting amplifier, the close loop gain is equal to the feedback resistance divided by
the
INPUT RESISTANCE

228. Class C amplifiers can never be linear because ___.
CLASS C AMPLIFIERS ARE ALWAYS NON-LINEAR

MICROELECTRONICS

229. The fan-in in logic gate is equal to the number of _____.
INPUT TERMINAL

230. The value of the input voltage that switches the ouput of the comparator or Schmitt
trigger.
-TRIP POINT

231. The unit of Voltage gain of an amplifier is
Db

232. Used in IC manufacturing to remove organic materials.
ACETONE

233. Element that penetrates the semiconductor substrate
DIFFUSED IC
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234. Type of PCB that is most complex to build and most difficult to repair.
LAYER BUILD-UP

235. The process of developing thin film IC in which the substrate is heated in a furnace
THERMAL GROWTH

236. ______of an oscillator is the pushing rate expressed in megahertz per volts
PUSHING FIGURE

237. ratio of mark and space interval
1:1

238. In IC fabrication, gold and aluminum bonding wires are used to connect the circuit to the
____.
PACKAGING LEADS

239. output of _____ feedback
TYPE 1

240. Method of achieving thin film in IC manufacturing for deposition of oxides, nitrides
and pyrocrystalline.
CHEMICAL VAPOR DEPOSITION

241. D-MOSFETS have what type of doped channel
HEAVILY

242. Multiple thermocouple in series used to increase sensitivity and accuracy
THERMOPILE

243. A type of sensor element that are used for frequencies greater than 100 GHz
THERMOCOUPLE SENSOR

244. Four arm circuit used to measure the unknown electrical constants
BRIDGE

245. Op-amps are widely used because its _____ characteristics can be varied to suit various
applications.
EXTERNAL

246. Depositing of material. . .
WAFER

247. The bridge that determine the unknown capacitance by comparing the standard
capacitance is ____ bridge
DE SAUTY BRIDGE

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248. Determine the orientation of an object
SELYSYN

249. A six-branch modification of Maxwell Bridge, used to measure self-inductance in terms of
capacitance and resistance
ANDERSON BRIDGE

250. The maximum change of rate of output voltage in an op-amp with respect to the
input signal.
SLEW RATE

251. Maximum velocity can that an actuator can move
SLEW RATE

252. The depletion region of MOSFET must be in what bias
REVERSE

253. discrete samples of the signal are taken by the digital oscilloscope
REAL-TIME SAMPLING

254. The detection by a robot though contact of touch, force, pattern slip and movement. It
allows for the determination of local shape, orientation and feedback forces of a grasped
workspace.-
TACTILE SENSING

255. variation of colpitts
CLAPP

256. What term is used to describe electronic systems that are made up of extremely small
parts or elements?
MICROELECTRONICS

257. The unique advantage of CMOS logic family
POWER DISSIPATION IN NANOWATTS

258. sacrifice factor of a negative feedback(di ko tapos tanong)
WITHOUT FEEDBACK

259. Exhibits a frequency that can be varied with a dc control voltage
VOLTAGE CONTROLLED OSCILLATOR

260. In an RTL, addition of input resistors in series increased the _____ of the circuit.
INPUT IMPEDANCE

261. The primary source of linear distortion of is the reactance associated with the circuit and
____ element.
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ACTIVE

262. damping factor of active filter determines the __________
RESPONSE CHARACTERISTICS-

263. saturated IC, inherently have low _______
SWITCHING SPEED

264. Advantage of IC over other discrete components
HIGHER ATTAINABLE SWITCHING SPEED

265. Transconductance
DRAIN CURRENT DIVIDED BY GATE VOLTAGE

266. unique characteristic of cmos
POWER DISSIPATION IN NANOWATTS

267. Ethanol, used as an cleaning agent in IC's, has a boiling point of __
78.3 DEGREE C

268. Cleansing agent in IC's
ACETONE

269. A transistor in which the semiconductor wafer is etched down in steps so the base and
emitter regions appear as physical plateaus above the collector region.
MESA TRANSISTOR

270. An Oscilloscope which is use to display the data in a longer time.
STORAGE OSCILLISCOPE

271. Recharged is TWICE in full wave than half wave

272. N-channel enhancement type MOSFETs have ___ in the gate.
HIGH POTENTIONAL

273. microcircuit components with discrete components
MICROCIRCUIT MODULE

274. cascading the amplifier results in gain and bandwidth
INCREASE, INCREASE

275. major component of a MOS IC
MOSFET

276. In oscilloscope, adjust the brightness?...
VOLUME OF THE CONTROL GRID

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INDUSTRIAL ELECTRONICS PRINCIPLES/APPLICATION

277. A nonmetallic material used to protect wires and cables
FIBROUS BRAID

278. Instrument used to monitor/measure animals activities (i.e., PH)
Radio Pill

279. Biometry is used for:
Identification
Verification
_______
AUTHENTICATION

280. Test equipment that observes the performance and isolates the fault
ON LINE

281. Which must not be used in a wire with glass braid and asbestos
HOT BLADE WIRE STRIPPER

282. Transfer the features of substrate into the IC
LITHOGRAPHY

283. calculation of actuator forces to provide end-effector values
INVERSE DYNAMICS

284. Measures brain electrical activity using magnetic ...
MAGNETOENCEPHALOGRAPH (MEG)

285. The precessing rate of gyro is proportional to the ______
RATE OF GYRO CASE ROTATION

286. transfer of mechanical power from one place to another; gear ratio is constant
CHAIN DRIVE

287. Also known as end of arm tooling or simply a hand. The subsystem that links the
mechanical portion of the robot (manipulator) to the part being handled or work on, and
gives the robot the ability to pick yp and transfer parts and/or handle a multitude of
different tools to perform work on parts.
END EFFECTOR

288. When you solder electrical connector splices, and terminal lugs, what type of solder
should you use?
60/40

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289. To turn SCR off from conducting state to blocking state by reducing the anode
current below
HOLDING CURRENT VALUE

290. Minimum current required for SCR to conduct continuously
HOLDING CURRENT

291. LC oscillator with tapped capacitance in parallel with an inductance
COLPITTS

292. Prevent accidental actuator switch position
LOCKED POSITION

293. Due to slight change in resistance due to temperature, the material used for instrument
MANGANIN

294. Zener diode can be used as a voltage regulator by:
REVERSE - PARALLEL

295. Has no depletion region
SCHOTTKY DIODE

296. Schottky TTL diode family mostly used as
HARMONIC GENERATOR.

297. A negative resistance microwave diode that has thin film semiconductor material
sandwiched between two parallel plates is called ____ diode.
PIN

298. an oscillator that produces the best sine wave output
WEIN BRIDGE

299. adds protection against sudden current increase when switching
AYRTON SHUNT

300. RANGES

301. check the functionality of equipments
PREVENTIVE MAINTENANCE

302. To remove wick, the solder wick is placed __
BETWEEN JOINTS AND IRON

303. In Western Union splice ...
PUNCTURING THE TAPE COVERING

304. consists of multiple microprocessors
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3RD GENERATION ROBOT SYSTEM

305. Measurement of electric currents in the scalp..
EEG

306. the ___ of a triac in the 1st and 3rd quadrant is the same as .... of an scr
V-I CHARATERISTICS


ROBOTICS

307. In robotics, the loading/ unloading of cartoons, container, or pallet
PALLETIZING/ DEPALLETIZING

308. Robot actuators are: a.) electric, b.) pneumatic and ________ -
HYDRAULIC

309. Magnetic reed and moving disk are used to measure _____ of a synchro robot
ROTATIONAL SPEED

310. Types of robot configuration: a.) Cartesian, b.) Cylindrical, c.) spherical and _____
ARTICULATED

311. skeleton of the body
KINEMATIC CHAIN

312. In robots, the recent alternative for DC actuator in piezo motor is also called as
ULTRASONIC

313. Integration of actuator such ADC, processor, ACD and a like is known as _______.
SMART SENSOR

314. The following are components in the robotics transmission: WAVE GENERATOR, REFLEXSPINE,
_________
CIRCULAR SPLINE

315. The part of the restricted envelope where the robot performs its program is the _______
envelope.
OPERATING

316. End effector is called
END-OF-ARM-TOOLING (EOAT)

317. An overhead mounted, rectilinear robot with a minimum of three degrees of freedom and
normally not exceeding six.
GANTRY ROBOT.
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ELECTRONICS


318. position sensor of Servo system
POTENTIOMETER

319. Service servo . . .overtravel???


320. Constant movement of robot
POSITIONING

321. Robots used as __________ has the end-effector at the last link.
Manipulators

322. Position of the switch
ACTUATOR

323. large man-sized adept-type robot
SCARA CONFIGURATIONS, SERVED Z AXIS, DIRECT

324. DRIVE MOTORS

325. Movement about an axis perpendicular to the line and top of the body
YAW

326. A robot that repeats the same sequence of motions in all its operations, and is first
instructed by an operator who puts it through this sequence.
PLAYBACK ROBOT

327. Can move like a persons arm
ANTHROPOMORPIC ROBOT

328. When human is trapped in the robot work envelope without an avenue of escape
PINCH POINT

329. In synchros, multispeed advantage over single speed
GREATER ACCURACY

330. Robot in which motions are controlled by driving each axis or degree of freedom against
mechanical limit stop.
BANG BANG ROBOT

331. What robot programming loaded the program in a remote computer console
OFF-LINE PROGRAMMING

332. Work envelope of robot
RANGE AXISOF MOTION
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ELECTRONICS


WELDING

333. In arc welding, DC is produced in
MOTOR GENERATOR SET

334. Type of electric arc welding that uses arc to continuously fed flux-filled electrode.
FLUX-CORED ARC WELDING (FCAW)

335. Small current shall not be used but rather large current in <welding> because it cannot
maintain thermal conductivity while
GIVING OFF HEAT TO THE CONDUCTOR

336. In welding, the energy required is coming from the discharging capacitor
PEW (percussion welding)

337. AC welding machine is not used in ___ welding.
MIG

338. Welding process whereby a filler metal is heated above and distributed between two or
more close-fitting parts by spontaneously raises the liquid uses a liquidus within 450
degrees.
BRAZING

339. Weld bulbs wineglass design are made from
PLASMA ARC WELDING

340. . . . oxy fuel flame. . .
OXY FUEL WELDING

341. FRICTION WELDING

342. Welding technique which produces coalescence of metals by applying heat with an arc
between a non consumable carbon electrode and the work piece
CARBON ARC WELDING

343. MIG (metal inert gas) is used because of ite operation and HIGH MELTING DYNAMIC
RANGE

344. In removing solder, the wick must be placed ______.
BETWEEN THE JOINTS AND IRON

345. In automatic welding, the first interval where the material is held together.
SQUEEZE INTERVAL

346. The portion in welding process interval during which the welding current is flowing
HEAT- SUBINTERVAL
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ELECTRONICS


347. bead of wineglass design
PLASMA ARC WELDING


COMPUTER FUNDAMENTALS

348. ____ code that states the exact location of the item or data to be found which is
stored in the computer.
ABSOLUTE CODE

349. It is prescribed in file handling programs
UTILITIES

350. Image resolution is specified by
DOT PITCH

351. NAND: if set is 1, clear is 0. Then, set is 0, latch is
HIGH

352. LASCR is like an ordinary SCR except that it is
LIGHT TRIGGERED

353. using graphical images
GUI

354. What distinguishes J-K Flip flop to S-C flip flop
TOGGLE CONDITION

355. Computer uses complementary subtraction to
SIMPLFY THE CIRCUIT

356. What do you call to the first byte of machine level instruction?
OP-CODE
357. The weakest link in any communication system
THE PEOPLE IN IT

358. the higher level of RAID
DATA STRIPING

359. keeps track of the binary margin
WORD WRAP

360. computer literacy has the following components:
Awareness
Knowledge
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ELECTRONICS

________
INTERACTION

361. supercomputer (7072 trillion)
BLUE GENE/L

362. RS filp flop R=0, S=0
REMAINS THE SAME

363. like latch, flip flops belong to the category known as __________ multivibrator
BISTABLE

364. Multivibrator with uncertain output
S C

365. Toggle condition for JK flip flop
J=1, K=1

366. Advantage of ECL
HIGHER GAIN

367. The memory area for programs with highest priority
FOREGROUND

368. In computer system, central processing unit is a
HARDWARE

369. Saturated logic circuits have inherently low __
SWITCHING SPEED

370. One unique operating feature of ECL is that it can operate in ____ speed.
VERY HIGH

371. Command awaiting in by the user
PROMPT

372. Basta ung may ellipses ()
DIALOGUE BOX

373. Program which can be sabotage at a certain condition.
BOMB

374. Noise margin is measured in _____
VOLT

375. floating points of operations per second
FLOPS
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ELECTRONICS


376. device to make calculations easier
COMPUTER

377. CPU controls the ALU
THIRD STEP

378. pre-written standard file- handling programs
UTILITIES

379. Least propagation delay
TTL SCHOTTKY

380. Type of memory that must be removed physically to change the content
EPROM

381. device between connection of lan that uses internet protocol
IP SWITCH


382. In PNP transistor, power supply is connected so that ____ is negative with respect to
emitter
COLLECTOR

383. Basic component of a Computer:
POWER SUPPLY

384. The use of an interactive terminal workstation usually with graphics capability to automate
the design of products. It includes functions such as drafting and fitup parts
CAD

385. Central processing unit is a part of
HARDWARE

386. Prewritten standard for file handling program
UTILITIES

387. Connection between the CPU and memory
CACHE

388. Keeps computer running though the RAM is slow.
Cache

389. In high level programming with peripherals, controllers are:
OFFLINE PROGRAMMING

390. (1)xxx, (2)sensors, (3)___
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ELECTRONICS


391. use to have two numerals in one byte
PACKED BCD

392. ECL (note: this has the fatest switching)
LOW PROPAGATION DELAY

393. Software written for a group of like consumer
VERTICAL

394. __ simulation. Top-most (or simply the best) type of simulation.
ARCHITECTURE

395. The act of persuading people to tell their passwords is called ___ engineering.
SOCIAL ENGINEERING


ELECTRONIC EFFECTS/CONSTANTS

396. Geiger-Niall Law states that short lived isotopes emit ____ energetic alpha particles than
long lived ones.
MORE

397. A magnetic field when applied to a right angles to the direction of a temperature gradient
in a conductor , a temperature difference is produced at right angles both to the direction
of temperature gradient and the direction of the magnetic field.
LELUC EFFECT

398. The development of charges in a certain in crystal when they are unequally heated or
cooled
PYROELECTRIC EFFECT

399. The potential difference between two parallel electrodes is given by the product of
the churva and the distance between the parallel electrodes
PASCHENS RULE or PASCHENS LAW

400. The distortion in a facsimile record caused by unwanted modulation produced by a carrier
signal.
KENDALL EFFECT

401. The development of DC voltage in a semiconductor or metal by an acoustic
wavetravelling parallel to the surface of material.
Acoustoelectric effect

402. The continuation of collector current in a transistor for a short time after the input signal
has dropped to zero. The effect is due to storage of minority carriers in the base region
BACK- PORCH EFFECT
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ELECTRONICS


403. The effect at the receiving end of an open circuited terminal that is lightly loaded
FERRANTI EFFECT

404. Appearance of RF current oscillation in a DC bias slab of n type GaAs in 3.36V electric
field.
GUNN EFFECT

405. Effect used in gaussmeter used to measure flux density
HALL EFFECT

406. The effect that describes the ability of a mechanically stressed ferromagnetic wire to
recognized rapid switching of magnetization when subjected to a DC magnetic field.
WIEGAND EFFECT

407. It refers to condition in which nucleus is stimulated sharply to define beam of gamma
MOSSBAUER EFFECT

408. A non radiative transition of an atom from an excited energy state to a lower energy state,
accompanied by the emission of and electron
AUGER EFFECT

409. the electric current destroy the superconductivity without raising the cryogenics temp
SILSBEE EFFECT

410. Factor used to correct for the electrostatic force of the far distant ion in the ionics.
MADELUNG CONSTANT


411. The liberation or absorption of heat when an electric current flows from a warmer to a
cooler part of a conductor.
FULL EFFECT

412. The law that the ratio of the thermal conductivity of a metal to its electrical conductivity is
a constant, independent of the metal, times the absolute temperature.
WEIDMANN-FRANZ EFFECT

413. The law that the ratio of the thermal conductivity of a metal to its electrical conductivity is
a constant, independent of the metal, times the absolute temperature.
WIEDEMANN-FRANZ EFFECT

414. The cumulative process in which an electron or other changed partile accelerated by a
strong electric field collides with and ionizes gas molecules and therby releasing new
electrons that in turn have more collision
AVALANCHE EFFECT

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ELECTRONICS

415. the development of an electromotive force in a junction of two dissimilar metals when the
temperature of the junction is different from that of the rest of the metal.
SEEBECK EFFECT

416. random variations in the output current of an electron tube that has an oxide- coated
cathode, caused by random changes in cathode emission.
FLICKER EFFECT

417. Traverse magnetic field is applied to an N-type semiconducting filament holes injected into
the filament are depleted to the surface, where they may recombine rapidly with electrons
or be withdrawn by a probe. The overall effect is an increase in conductance.
SUHI EFFECT


HALL OF FAME

418. Silver Sulfide was discovered by
MICHAEL FARADAY

419. invention of automatic regulators for use in conjunction with gas accumulators for
illuminating lighthouses and buoys
NILS GUSTAF DALEN

420. discover the relationship between electricity and magnetism
HANS CHRISTIAN OERSTED

421. Invented/Patented IC
JACK KILBY

422. Boolean Algebra
SHANNON



TELL ME WHEN

UNCLASSIFIEDS
423. .boson
BOSE-EINSTEIN

424. Constant signal frequency output.
Stability

425. An electronic system changes depending on current or voltage ( di ako sure sa tanong)
LINEAR ELECTRONIC SYSTEM
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ELECTRONICS


426. A noise generator that produces sequence of random (noise?)
Van-McCArthney

427. The ability of dielectric material to have double refraction in electric field.
KERR-REFRACTO OPTICAL

428. To produce single lace conductor, the total length must be _________ times the length of
the conductor.
TWO AND ONE-HALF

429. Magnetic characters in your bank checks are produced by _____
MICR INSCRIBER

430. What sensing element typically made from a thin walled tube formed into deep
convolutions and sealed at one end, whose displacement can then be made to act on
a transduction element
BELLOW

431. uses RF
Bunching

432. The electric current or movement of electric charge carriers, which is due to the applied
force, that is of stated as electromotive force over a given period of time is called
_____
DRIFT CURRENT

433. Type of manufacturing which is composed of two or more cells and material transport
mechanism.
CENTER

434. power ratingmas mganda ang______compare to stand-alone
SERIES-PARALLEL

435. bandstop also known
BAND SUPPRESSION/BAND REJECT

436. . 6 rectifying elements/ A three-phase, full wave rectifier, using six elements
GRATZ RECTIFIER

437. supervisor program
MANAGEMENT

438. voltage of gate(FET)
HIGH POSITIVE

439. Randomly sequence of square pulses
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ELECTRONICS

VOSS-MCCARTNEY

440. ujt forward
B1-EMITTER

441. ujt reverse
EMITTER TO B2

442. check.
MIRC INSCRIBER

443. ELECTROACTIVE POLYMER

444. The ratio of the electron beam voltage to the two-third of the electron beam current

PERVEANCE

445. property that define the volume of a solid at melting temperature
GRAM-ATOMIC VOLUME

446. to smoothen..
AMPLIFICATION AND DAMPING

447. POCKETS

448. most common error
COUNT-HOLD

449. The approved method in conformal coating removal:
Mechanical
Thermal
_________
CHEMICAL

450. Glows when struck with energized electron of the cathode
PHOSPHOR

451. Generator of flat frequency produce /Frequency noise source response and shows
anomalies blah blah blah
PINK NOISE

452. Generate two or more tone produce
INTERMODULATION SIGNAL

453. Lightning arrester is located
NEAR THE TRANSFORMER

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ELECTRONICS

454. . . . Rate of constant . . .
BOSE EISEN

455. LED (GaAs, GaP used)
EMITS MORE LIGHT

456. Advantage of LCD over LED
WALANG SAGOT @.@

457. formula for overall transmission
MASON'S THEOREM

458. nucleon ...
RADIATION SENSING

459. the work required to pull off a ??? from an electron... is called ___.
FIRST IONIZATION POTENTIAL

460. Residential defect . . .
BROWNOUT

461. High technology controllers
A. Off time
B. Sensors
C. VISION SYSTEM

462. ONLY WHEN THE POTENTIAL .EXCEEDS THE POTENTIAL BARRIER

463. High temperature environment uses
SILICONE RUBBER

464. Prevent .
SNAP-ACTING SWITCH

465. A rattail is used when a branch circuit is required and to join conduit a ____ is used
JUNCTION BOX

466. road-interfaced oriented lines
KIKUCHI LINE

467. Kikuchi line is made up of _____ lines
BLACK AND WHITE

468. The impedance at specified terminal where all internal sources are shorted but their
impedances retain.
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SLSU 23AUG2012
ELECTRONICS

INPUT IMPEDANCE

469. When a large aluminum terminal lug or splice is installed, why is it NOT necessary to
clean the aluminum wire?
THE WIRE IS CLEANED BY THE ABRASIVE COMPOUND IN THE LUG OR SPLICE

470. A neon lamp move with two parallel transmission line glows its brightest at
MAXIMUM VOLTAGE

471. Cholestoric crystal is discolored/ colored because of?
SLIGHT TWIST BETWEEN LAYERS

472. Driven point impedance
INPUT IMPEDANCE

473. In root-focus point analysis, used to produce a steady-state-error with step input are:
Backlash
Deadzone
???

474. Depends on number of pole pairs in motor
NO. OF PHASES

475. Thermal Inertia

476. Stability

477. relates the decay constant of a radioactive isotope with the energy of the alpha particles
emitted
Geiger-Nuttal Law

478. Electromotive force

479. Without connecting directly to the circuitload