Semiconductor Theory MCQ Questions & Answers

1.
The strength of a semiconductor crystal comes from

A. Forces between nuclei

B. Forces between protons

C. Electron-pair bonds

D. None of the above

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2.
The impurity level in an extrinsic semiconductor is about of pure semiconductor.

A. 10 atoms for 108 atoms

B. 1 atom for 108 atoms

C. 1 atom for 104 atoms

D. 1 atom for 100 atoms

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3.
A hole and electron in close proximity would tend to ___________

A. Repel each other

B. Attract each other

C. Have no effect on each other

D. None of the above

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4.
A semiconductor has generally ___________ valence electrons.

A. 2

B. 3

C. 6

D. 4

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5.
A pentavalent impurity has ___________ Valence electrons

A. 3

B. 5

C. 4

D. 6

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6.
A forward biased pn junction diode has a resistance of the order of

A. Ω

B. kΩ

C. MΩ

D. None of the above

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7.
A reverse biased pn junction has resistance of the order of

A. Ω

B. kΩ

C. MΩ

D. None of the above

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8.
A semiconductor has ___________ temperature coefficient of resistance.

A. Positive

B. Zero

C. Negative

D. None of the above

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9.
At room temperature, an intrinsic semiconductor has ___________

A. Many holes only

B. A few free electrons and holes

C. Many free electrons only

D. No holes or free electrons

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10.
At absolute temperature, an intrinsic semiconductor has ___________

A. A few free electrons

B. Many holes

C. Many free electrons

D. No holes or free electrons

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Semiconductor Theory MCQ Questions & Answers | Electrical Engineering

1. The strength of a semiconductor crystal comes from

Answer & Solution

2. The impurity level in an extrinsic semiconductor is about of pure semiconductor.

Answer & Solution

3. A hole and electron in close proximity would tend to ___________

Answer & Solution

4. A semiconductor has generally ___________ valence electrons.

Answer & Solution

5. A pentavalent impurity has ___________ Valence electrons

Answer & Solution

6. A forward biased pn junction diode has a resistance of the order of

Answer & Solution

7. A reverse biased pn junction has resistance of the order of

Answer & Solution

8. A semiconductor has ___________ temperature coefficient of resistance.

Answer & Solution

9. At room temperature, an intrinsic semiconductor has ___________

Answer & Solution

10. At absolute temperature, an intrinsic semiconductor has ___________

Answer & Solution

1.
The strength of a semiconductor crystal comes from

2.
The impurity level in an extrinsic semiconductor is about of pure semiconductor.

3.
A hole and electron in close proximity would tend to ___________

4.
A semiconductor has generally ___________ valence electrons.

5.
A pentavalent impurity has ___________ Valence electrons

6.
A forward biased pn junction diode has a resistance of the order of

7.
A reverse biased pn junction has resistance of the order of

8.
A semiconductor has ___________ temperature coefficient of resistance.

9.
At room temperature, an intrinsic semiconductor has ___________

10.
At absolute temperature, an intrinsic semiconductor has ___________