Basic electronics MCQ question answer

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Basic electronics

Basic electronics 2

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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

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

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Category: Electronics basics

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

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Category: Electronics basics

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

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Category: Electronics basics

4. A voltmeter is used:

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Category: Electronics basics

5. The term used to designate electrical pressure is

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Category: Electronics basics

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

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Category: Electronics basics

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

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Category: Electronics basics

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

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Category: Electronics basics

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

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Category: Electronics basics

10. An example of potential energy is

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Category: Electronics basics

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

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Category: Electronics basics

12. A photodiode is normally

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

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

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Category: Electronics basics

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

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Category: Electronics basics

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

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Category: Electronics basics

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

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Category: Electronics basics

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

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Category: Electronics basics

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

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Category: Electronics basics

19. A blown-fuse indicator uses a

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Category: Semiconductor diode (PN junction)

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

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Category: Electronics basics

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

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Category: Electronics basics

22. For a low voltage rectification:

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Category: Electronics basics

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

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

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

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

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Category: Electronics basics

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

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Category: Electronics basics

26. Current is considered as the movement of

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Category: Electronics basics

27. The varactor is usually

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

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

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Category: Electronics basics

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

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

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

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Category: Electronics basics

31. f the depletion layer gets wider, the capacitance

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