1.

It is an electronic device use to limit the flow of

electric current.

A. capacitor

B. resistor

C. transistor

D. diode

2. It is an electronic device use to stow electric

charge.

A. resistor

B. transistor

C. diode

D. capacitor

3. It is a solid state device use to amplify the small

input signal to become large output signal.

A. resistor

B. transistor

C. diode

D. capacitor

4. It is the simplest solid state device which is use

as rectifier.

A. transistor

B. diode

C. resistor

D. capacitor

5. It is a kind of electronic equipment use to

measure resistance.

A. Voltmeter

B. Ohm meter

C. Ammeter

D. Wattmeter

6. It is a kind of diagram where all information its

symbol and designation are emphasize.

A. Electricity

B. Schematic diagram

C. Wiring diagram

D. fish tailing diagram

7. It is a branch of physics which deals with the

study of the behavior properties and control

electrons in the circuit.

A. Electricity

B. Electronics

C. Radio Mechanics

D. Computer

8. It is a kind of circuit where there is a continuous

flow of electric current.

A. Close circuit

B. Open circuit

C. Short circuit

D. Ground circuit

9. It is a process of removing unwanted copper

from the PCB.

A. Soldering

B. Etching

C. Boring

D. Mounting

10. How much is the resistance of a 100 watts 120

volts light bulb?

A. 1.44 Ω

B. 14.4 Ω

C. 144 Ω

D. 1440 Ω

11. Commonly resistor is connected in a circuit to

A. drop voltage

B. drop reactance

C. increase voltage

D. increase reactance

12. If a given resistor has color coded value as

brown, red, orange and gold, its nominal value is

A. 123 Ω ± 5%

B. 123 Ω ± 10%

C. 12,000 Ω ± 5%

D. 12,000 Ω ± 10%

13. When two resistors having different values are

connected in parallel, their total resistance can be

calculated as
A. RT = N/2

B. RT = R1 + R2

C. 1/RT = 1/R1 + 1/R2

D. none of the above

14. The total resistance of the resistors connected

in series with values such as 1.2 k Ω and 500 Ω is

A. 1.7 k Ω

B. 1,700 Ω

C. 352.94 Ω

D. a and b

15. It is a property of circuit element which

opposes any current change, and is measured in

Henry, this is called

A. Capacitance

B. Inductance

C. Resistance

D. Conductance

16. The power transformer characterized with more

number of turns at the primary than the secondary

winding is a transformer known as

A. step-down

B. step-up

C. auto-transformer

D. isolating

17. Inductors L1 and L2 are in parallel with each

other having the same values of 300mH. Their

combined inductance is

A. 150mH

B. 600mH

C. 0

D. none of the above

18. If a power transformer has NP of 1800 turns,

NS of 74 turns and EP of 220 V, how much is the

ES?

A. 3 V

B. 6 V

C. 9 V

D. 12 V

19. Capacitor’s property which says how much

charge can be stored units dielectric is referred to

as

A. Resistance

B. Conductance

C. Inductance

D. Capacitance

20. A capacitor consists of two

A. conductors separated by an insulator

B. insulators separated by a conductor

C. conductors alone

D. insulators alone
21. To combine capacitances in series. It is

computed simply by

A. 1/CT = 1/C1 + 1/C2

B. C = Q/V

C. CT = C1 + C2

D. None of the above

22. The unit of measure of electrical current is

A. Volt

B. Ampere

C. Ohm

D. Watt

23. When capacitors are connected in parallel, their

capacitances can be calculated as

A. CT = C1 + C2

B. 1/CT = 1/C1 + 1/C2

C. C = Q/V

D. None of the above

24. A capacitance of 0.02 µF equals

A. 0.02 X 10¬¬-12 F

B. 0.02 X 10-6 F

C. 0.02 X 106 F

D. 200 X 10-12 F

25. When a semiconductor diode’s anode terminal

is supplied with negative dc voltage and the

cathode with positive dc voltage, the diode bias is

A. Forward

B. Reverse

C. No bias

D. More bias

26. When the arrow head on the electronic symbol

of a semiconductor transistor is pointing inward,

the type of transistor is

A. NPN

B. PNP

C. NPNP

D. PNPN

D. Larger than a no. 8 copper wire

27. If 12 volts are applied to a certain lamp whose

filament has a resistance of 3 ohms, the current

flow through the lamp filament will be

A. 4 amp

B. 36 amp

C. 8 amp

D. 12 amp

28. If a copper wire becomes heated because of an

excessive amount of current flowing through it, the

resistance of the wire

A. Decreases

B. Increases

C. Remains the same as when the wire is cold

D. Becomes zero

29. To measure the current flowing through a

circuit, connect an

A. Ohm meter

B. Ammeter

C. Volt meter

D. Meter in series with the circuit

30. In the laboratory, to verify the current in a

resistor, _______________.

A. an ammeter is connected in series with the

resistor

B. a voltmeter is connected in series with the

resistor

C. an ammeter is connected parallel to the resistor

D. a voltmeter is connected parallel to the resistor

31. Which statement is true?

a. An ammeter has negligible resistance.

b. A voltmeter has negligible resistance.

c. An ammeter measures voltage.

d. A voltmeter measures current.

32. Kirchhoff’s Current Law : nodes ; Kifchhoff’s

Voltage Law : __________

a. junction

b. loops

c. meshes
d. b and c

33. Kirchhoff’s Laws are applicable to networks

with series resistors.

a. Always true

b. Often time

c. Sometimes true

d. Never true

34. The conservation law that served as basis for

Kirchhoff’s Current Law is _________.

a. conservation of charge

b. conservation of energy

c. conservation of mass

d. conservation of quantum numbers

35. Which statement is true about Kirchhoff’s

Current Law?

a. The sum of the currents entering the node is

equal to that leaving the same node.

b. The current in a conducting loop is the same for

all resistors in the loop.

c. The numerical sum of the currents entering a

node is zero.

d. The sum of the current over a loop is zero.

36. A capacitor and an inductor are electronic

components that store electrical energy. How is an

inductor different from a capacitor?

a. An inductor is an electromagnet

b. An inductor is made up of a coil of wire

c. An inductor may be made into a capacitor

d. An inductor stores energy in its magnetic field

37. Which of the following is NOT a function of a

resistor in a circuit?

I. It limits the flow of current

II. It prevents short and overloading

III. It regulates the voltage of circuit elements

a. I only

b. II only

c. I and II

d. I, II and III

38. Which of the following describes a step up

transformer?

Primary Coil Seco

No. of

Turns

Volta

ge

No. of

turns

a. 200 10 V 50

b. 200 10 V 150

c. 200 10 V 200
d. 200 10 V 2000

39. How does a diode convert an AC signal to a DC

signal?

a. By filtering the flow of current in the circuit

b. By allowing current to pass in one direction

c. By resisting the flow of current in the circuit

d. By regulating the flow of current in the circuit

40. Which of the following instrument is used to

measure the amount of current flowing in an

element in a circuit?

a. ammeter

b. ohmmeter

c. tester

d. voltmeter

41. A transformer has 250 turns in its secondary

coil. The secondary voltage is 10 V. If the

transformer is connected to a 220 V source, how

many turns does the transformer have in its

primary coil?

a. 5500

b. 2500

c. 500

d. 11

42. Which of the following semiconducting device

serves as an amplifier in a circuit?

a. capacitors

b. diodes

c. integrated circuits

d. transistors

43. A step up transformer is used by power plants

to transmit electrical power at a very high voltage

over a large distance. Why is this so?

a. It is the cheapest way of transmitting electrical

power.

b. Because large amount of power requires large

amount of voltage for transmission.

c. Because high voltage transmission lines have

almost zero resistance to the flow of current.

d. Because current is small in high voltage

transmission lines preventing significant waste of

electrical energy.

44. Which of the following semiconducting device is

generally used as an indicator when an appliance is

turned on or off?

a. Light emitting diodes

b. Photodiodes

c. Photoresistors

d. Small lamps

45. Compared to the primary coil, the number of

turns in the secondary coil of a step up transformer

is _____________.

a. less

b. more

c. the same

d. infinite

46. What does a changing magnetic field in a coil of

wire produce?

a. An induced power

b. An induced voltage

c. An induced resistance

d. An induced coil polarity

47. Why does alternating current replace direct

current for general use?

a. Alternating current has more power than direct

current

b. Alternating voltages are convenient to transform

c. Generators always generate alternating current

d. Alternating current is safer than direct current

48. How does the audio signal of television

networks transmitted?

a. By modulating the frequency of the wave

b. By modulating the amplitude of the wave

c By transforming it to an analog signal

d. By transforming it to a digital signal

49. A fuse or a circuit breaker is always connected

in series with the appliance or the circuit that it

intends to protect when short or overloading

happens. Why is this so?

a. It is easier to connect a fuse in series than in

parallel.

b. Short and overloading always happen in series

circuits.

c. There is higher probability for overloading in

parallel circuits.

d. There is only one path for current to flow in a

series connection.

50. In the laboratory, to determine the voltage

across a resistor, ______________.

a. an ammeter is connected in series with the

resistor

b. a voltmeter is connected in series with the

resistor

c. an ammeter is connected parallel to the resistor

d. a voltmeter is connected parallel to the resistor

51. Which statement is true?

a. An ammeter has negligible resistance

b. A voltmeter has negligible resistance

c. An ammeter measures voltage

d. A voltmeter measures current

52. Kirchhoff’s Current Law : conservation of

charge ; Kirchhoff’s Voltage Law : __________

a. conservation of mass

b. conservation of energy

c. conservation of quantum numbers

d. b and c

53. Kirchhoff’s Laws is applicable to networks

containing any electrical elements.

a. Always true

b. Often time

c. Sometimes true

d. Never true

54. Kirchhoff’s Voltage Law is applicable to

networks containing ___________.

a. capacitors

b. inductors

c. potential and current sources

d. resistors

55. Which statement is NOT true about Kirchhoff’s

Laws?

a. The numerical sum of the voltage rise and that of

the potential drop in a conducting loop are equal.

b. The sum of the voltage rise and the voltage drop

in a conducting loop is zero.

c. The voltage across any resistor in a loop is

always a voltage drop.

d. The voltage across a voltage source is

sometimes a voltage drop.

56. Compared to the primary coil, the number of

turns in the secondary coil of a step down

transformer is _____________.

a. less

b. more

c. the same

d. infinite

57. How does the video signal of television

networks transmitted?

a. By modulating the frequency of the wave

b. By modulating the amplitude of the wave

c By transforming it to an analog signal

d. By transforming it to a digital signal

58. Which of the following describes a step down

transformer?

Primary Coil Secondary

No. of

turns Voltage No. of

turns Vo

a. 50 100

V 200

b. 150 100

V 200
c. 200 100

V 200

d. 2000 100

V 200

59. Which of the following instrument is used to

measure the potential difference across an element

in a circuit?

a. Ammeter

b. Ohmmeter

c. Tester

d. Voltmeter

60. The amount of energy consumed by an

appliance per unit time is indicated as the

appliance’s

a. current

b. power

c. resistance

d. voltage

61. Which of the following can be a function of a

transistor in a circuit?

a. Amplifies current or electric signals

b. Limits the flow of current

c. Stores electrical energy

d. Regulates voltage

62. A battery has a voltage of 12 V. What does this

mean?

a. Both terminals of the battery have a 12 V electric

potential.

b. Both terminals of the battery have the same

electric potential.

c. One of the terminals of the battery is 12 V and

the other is 0 V.

d. One of the terminals of the battery is 12 V higher

in electric potential than the other.

63. Which of the following device best

demonstrates the concept that magnetism exerts a

force on a moving charge?

a. Diode

b. Generator

c. Motor

d. Transformer

64. Which of the following can cause electric

shock?

a. Current and power

b. Current and voltage

c. Voltage and power

d. Voltage and resistance

65. Which of the following can serve as a source of

radio waves transmitted by telecommunications

systems?
a. Electromagnetic waves

b. Nuclear reactions

c. Electric circuits

d. The sun

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