Basic Electronics MCQ’s for MS and Ph.D admission in universities

Basic Electronics MCQ’s for MS and Ph.D admission in universities

1. Semiconductor’s have which of the following bond?

a) Co-ordinate bond
b) Covalent bond
c) Electrovalent bond
d) all of the above

Answer - Click Here:
B

2. Pure silicon has a resistivity of …

a) 6000 Ω cm
b) 1000 Ω cm
c) 300 Ω m
d) 600 Ω cm

Answer - Click Here:
A

3. The region of semi-conductor which is lightly doped is known as …

a) base
b) source
c) emitter
d) all of these

Answer - Click Here:
A

4. Diamond is an example of …

a) Insulator
b) Conductor
c) Semi-Conductor
d) none of the above

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A

5. Quantities whose values vary in non-continuous manner are

a) analogue
b) vector
c) scalar
d) digital

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D

6. Mutual induction is dependent on which  of the following factor …

a) output polarities
b) current changes
c) winding ratios
d) none of these

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B

7. The common collector amplifier is called as …

a) emitter follower
b) base follower
b) collector follower
d) source follower

Answer - Click Here:
A

8. When we heat a pure semiconductor its resistance goes …

a) goes down
b) goes up
c) remains constant
d) none of these

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A

9. Why semiconductor crystal is much strong?

a) forces between nuclei
b) electron-pair bonds
c) forces between protons
d) all of the above

Answer - Click Here:
B

10. The pentavalent impurities are basically

a) acceptors

b) donors

c) both

d) none of above

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B

11. CRO stands for

a) cathode ray oscillioscope

b) cathode ray output

c) cathode oscillator

d) none of these

Answer - Click Here:
A

12.  In AND gate if any of logic input is ‘0’ then output will be …

a) 0
b) 1
c) 2
d) 3

Answer - Click Here:
A