Basic electronics MCQ question answer

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Basic electronics

Basic electronics 2

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Category: Electronics basics

1. Which resistive component is designed to be temperature sensitive?

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Category: Electronics basics

2. Which of the following has a negative-resistance region?

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Category: Semiconductor diode (PN junction)

3. Which type of diode is work as a Variable Capacitor?

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Category: Electronics basics

4. A photodiode is normally

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Category: Electronics basics

5. For typical operation, you need to use reverse bias with a

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Category: Electronics basics

6. Which of the following is not a physical component of an electronic circuit?

Mass action law is related to the concentration of electrons and holes in a semiconductor. Degenerative type semiconductors show similar behavior to metal. So, Mass action law is not valid for them.

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Category: Electronics basics

7. Mass action law is not valid for which type of semiconductors in electronic devices?

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Category: Electronics basics

8. The term used to designate electrical pressure is

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Category: Electronics basics

9. When the light increases, the reverse minority carrier current in a photodiode

Photo diode is a photoconductive cell. External voltage is applied and P-N junction is connected in reverse bias. Electron-hole pairs are generated by photons in the depletion layer.

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Category: Electronics basics

10. Which of the following is correct about photodiode electronic devices?

Degenerative N-type and degenerative p-type semiconductors are used in tunnel diodes. Tunnel diodes are used in microwave electronic devices and circuits

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Category: Electronics basics

11. Which type of semiconductor is used in Tunnel Diode?

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Category: Electronics basics

12. Which of the following is true about Zener diode?

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Category: Electronics basics

13. One coulomb passing a point in one second is one

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Category: Electronics basics

14. Which of the following semiconductor is mostly used to construct electronic circuits?

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Category: Electronics basics

15. For a low voltage rectification:

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Category: Electronics basics

16. Which of the following is not an electronic device?

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Category: Electronics basics

17. Which of the following is the correct order of turn-off times?

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Category: Electronics basics

18. Forbidden Energy gap (EG) of a semiconductor in electronic devices depends on which of the following factors?

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Category: Electronics basics

19. What is the color code for a 220 omega.gif 5% resistor?

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Category: Electronics basics

20. The varactor is usually

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Category: Electronics basics

21. A blown-fuse indicator uses a

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Category: Electronics basics

22. In which of the following region does BJT act as the amplifier electronic device?

LEDs need compound type semiconductors because they have direct band gap. In direct band gap, photons are easily generated when electrons release energy during recombination.

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Category: Electronics basics

23. What type of semiconductor is used in LED electronic circuits?

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Category: Electronics basics

24. Current is considered as the movement of

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Category: Electronics basics

25. f the depletion layer gets wider, the capacitance

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Category: Electronics basics

26. An example of potential energy is

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Category: Electronics basics

27. A voltmeter is used:

P-N junction diodes have two modes of operations i.e. forward and reverse bias.

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Category: Electronics basics

28. Which of the following is wrong about P-N junction diodes used in electronic devices?

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Category: Electronics basics

29. Which voltage source converts chemical energy to electrical energy?

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Category: Electronics basics

30. To display the digit 8 in a seven-segment indicator,

Solar cell is a photovoltaic cell. No external voltage is applied and solar cell responsivity is directly proportional to the wavelength of the incident light. It doesn’t produce dark current.

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Category: Electronics basics

31. Which of the following is wrong about solar cell electronic devices?

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