ELECTRONICS ENGINEERING
1. In a series RLC circuit, what is the condition of the circuit if there is high impedance, low current, and
low reactance voltages?
A. Ideal circuit
B. Percent circuit
C. Resonant
D. Non-resonant *
2. If a transformer has a turns ratio of 1:3, what is the current ratio?
A. 1:3
B. 1:9
C. 3:1 *
D. 9:1
3. A differential circuit uses a _____.
A. Capacitor in its feedback circuit
B. RLC in its feedback circuit
C. Inductor in its feedback circuit
D. Resistor in its feedback circuit. *
4. The effect of 60 Hz A. C. over 100 mA or DC over 300 mA on the human body.
A. Mascular inhibition
B. Respiratory failure
C. Surprise
D. Usually fatal *
5. The open-loop gain of an op-amp is given at 225,000. Find the gain in dB.
A. 53.5
B. 107 *
C. 535
D. 10.7
6. As the input voltage varies within specified limits, the zener diode maintains a nearly constant output
voltage across its terminal. This is called _____.
A. Auto regulation
B. Specific regulation
C. Line regulation *
D. Load regulation
7. Find the phase angle between the voltage across and the current through the circuit when Xc is 25
ohms, R 100 ohms and Xl is 50 ohms.
A. 76 degrees with the voltage leading the current
B. 14 degrees with the voltage lagging the current
C. 14 degrees with the voltage leading the current *
D. 76 degrees with the voltage lagging the current
8. To produce thin film resistors, which of the following materials is the most widely used?
A. Titanium
B. Tantalum
C. Nichrome *
D. Chromium cermets
9. Which of the following are techniques used to eliminate bonding wire and to improve packaging in IC
production?
A. Flip chips
B. Beam lead chips
C. Flat pack
D. DIP
A. A,B, and C only
B. A and C only
C. A and B only *
D. A,B,C, and D
10. List the two advantages of a voltage divider in DC biasing
A. Unstable, uses two supply voltages
B. Unstable, uses one supply voltage
C. Stable, uses one supply voltages *
D. Stable, uses two supply voltages
11. MIG is also referred as:
A. SMAW
B. GMAW *
C. GTAW
D. OAW
12. _____ is a kind of oscilloscope which consist of narrowband if filter and a local oscillator (receiver)
capable of showing transmitter carriers, spacing, harmonics and sidebands.
A. Polygraph
B. Harmonics analyzer
C. Spectrum analyzer *
D. Computerized tomography
13. If the voltage gain for each input of a summing amplifier with a 4.8 kilo-ohm feedback resistor is unity,
the input resistors must have a value of _____ kilo-ohm.
A. 4.8 times the number of inputs
B. 48
C. 4.8 divided by the number of inputs
D. 4.8 *
14. The computer worm that infected computer systems world-wide in 10 minutes, making it the fastest
computer virus ever known is called _____.
A. Claw Hammer
B. Sledge Hammer
C. SQL Hammer *
D. SARS Virus
15. The use of feedback to achieve the desired response of a dynamic system in the presence of
uncertainties, disturbance or constraints is called _____.
A. Synchronization
B. Response
C. Control *
D. Servomechanism
16. _____ is the definite discrete amount of energy required to move an electron from a lower shell to a
higher shell
A. Quantum *
B. Positive energy
C. The center
D. The positive charge
17. Monolithic integrated circuits are usually referred to as _____.
A. Selenium rectifiers
B. Thin films
C. Silicon chips *
D. Hybrids
18. An English scientist who drew up plans for the first programmable computer in 1830
A. Vannevar Bush
B. William Oughtred
C. Charles Babbage *
D. Herman Hollerith
19. Insulators are characterized by a _____ energy gap between its conduction bands an valence band.
A. Very narrow
B. Wide
C. Very wide *
D. Narrow
20. It is the generated in a D. C. motor as armature coils out the field flux opposes the applied voltage, and
limits the flow of armature current.
A. Electromotive force
B. Field excitation
C. Counter-electromotive force *
D. Armature excitation
21. What do you call the “Filter” between a corporate network and the internet that keeps the corporate
network secure from intruders while giving corporate users uninhibited access to the internet?
A. Bandstep
B. Bandpass
C. Firewall *
D. Firestorm
22. Which of the following circuit conditions requires circuit protection?
A. Direct short/shot circuit
B. Excessive heat
C. Excessive current
A. A and C only
B. A, B and C only *
C. B and C only
D. A and B only
23. Two basic categories of voltage regulators are
A. Differential, integral
B. Capacitive, inductive
C. Linear, switching *
D. Centrifugal, centripetal
24. A measure of the energy absorbed from radiation by tissue or other biological material and is a equal to
the transfer of 1 x 10^-2 Joules energy per kilogram of material is called a _____.
A. Radical
B. Rad *
C. Radian
D. Radius
25. Which of the following are circuit control devices?
A. Switches
B. Solenoid
C. Relays
A. B and C only
B. A and NB only
C. A, B, and C *
D. A and C only
26. The specified value of holding current for an SCR means that
A. the device will turn on when the anode current exceeds this value
B. the device will turn off when the anode current falls below this value *
C. the device may be damaged if the anode current exceeds this value
D. the gate current must equal or exceed this value to turn the device on
27. _____ is the total number of magnetic lines of force in a magnetic field.
A. Magnetic potential
B. Magnetic flux *
C. Magnet flux intensity
D. Flux density
28. The symbols 1, 2 and 3 through 9 are what type of numerals?
A. Boolean C. Binary
B. Roman D. Arabic *
29. It states that the voltage produced in a thermocouple is proportional to the temperature between the
two junctions.
A. Seebeck effect *
C. Peltier effect
B. Thompson effect
D. Skin effect
30. This refers to a four-arm ac bridge used for measuring inductance against a standard capacitance
A. Maxwell bridge *
B. slide-wire bridge
C. resistance bridge
D. Wheatstone bridge
