Common Electronics Information Practice Test 1

Question – 1

1. ___________ allows electric current to pass through it.

  • A. An insulator


  • B. Wood


  • C. A Conductor


  • D. None of the above


  • Answer:C

  • Answer Explanation:





Question – 2

2. When temperature rises, the resistance of a semi-conductor ___________.

  • A. Increases


  • B. Decreases


  • C. Remains constant


  • D. Increases in the beginning and then gradually decreases.


  • Answer:B

  • Answer Explanation:





Question – 3

3. In order to reduce the voltage, a __________ is used.

  • A. diode


  • B. rectifier


  • C. step-up transformer


  • D. step-down transformer


  • Answer:D

  • Answer Explanation:





Question – 4

4. __________ is a method in which impurities are introduced into the crystal structure of silicon.

  • A. Lithography


  • B. Fabrication


  • C. Doping


  • D. Enhancing


  • Answer:C

  • Answer Explanation:





Question – 5

5. A __________ converts electrical energy into sound energy.

  • A. loudspeaker


  • B. transmitter


  • C. receiver


  • D. none of the above


  • Answer:A

  • Answer Explanation:





Question – 6

6. The process of conversion of liquid into gas is called as _________.

  • A. condensation


  • B. sublimation


  • C. melting


  • D. vaporization


  • Answer:D

  • Answer Explanation:





Question – 7

7. ___________ is used to measure electric power.

  • A. Volt


  • B. Watt


  • C. Ampere


  • D. Ohm


  • Answer:B

  • Answer Explanation:





Question – 8

8. Electrical charge can be stored using _________.

  • A. resistors


  • B. diodes


  • C. transistors


  • D. capacitors


  • Answer:D

  • Answer Explanation:





Question – 9

9. Which among the following is used for initiating a circuit action?

  • A. Trigger


  • B. Transformer


  • C. Voltmeter


  • D. Capacitor


  • Answer:A

  • Answer Explanation:





Question – 10

10. Alternating Current is changed to Direct Current using ________.

  • A. an ammeter


  • B. a rectifier


  • C. a terminal


  • D. None of the above


  • Answer:B

  • Answer Explanation:





Question – 11

11. Two electrical wires of thickness 6mm and 3mm are connected to a machine. The larger wire requires _______ voltage so that the two wires carry the same current.

  • A. more


  • B. less


  • C. constant


  • D. no


  • Answer:B

  • Answer Explanation:





Question – 12

12. A 20-ohm resistor and a 50-ohm resistor are connected in series. The total resistance is

  • A. 30 ohms


  • B. 50 ohms


  • C. 70 ohms


  • D. 20 ohms


  • Answer:C

  • Answer Explanation:





Question – 13

13. __________ is produced by a photovoltaic cell.

  • A. DC


  • B. AC


  • C. Both A and B


  • D. No current


  • Answer:A

  • Answer Explanation:





Question – 14

14. The current flowing through a circuit is 6A and the voltage is 2V. What will be its resistance?

  • A. 3 ohms


  • B. 12 ohms


  • C. 4 ohms


  • D. 0.3 ohms


  • Answer:D

  • Answer Explanation:





Question – 15

15. __________ is used for measuring current.

  • A. Wattmeter


  • B. Voltmeter


  • C. Ammeter


  • D. Ohmmeter


  • Answer:C

  • Answer Explanation:





Score: 0/10



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