Electrical Engineering · all questions

Semiconductor Theory
practice.

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32

Questions

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Q1

The strength of a semiconductor crystal comes from

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Q2

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

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Q3

A hole and electron in close proximity would tend to ___________

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Q4

A semiconductor has generally ___________ valence electrons.

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Q5

A pentavalent impurity has ___________ Valence electrons

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Q6

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

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Q7

A reverse biased pn junction has resistance of the order of

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Q8

A semiconductor has ___________ temperature coefficient of resistance.

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Q9

At room temperature, an intrinsic semiconductor has ___________

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Q10

At absolute temperature, an intrinsic semiconductor has ___________

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Q11

At room temperature, an intrinsic silicon crystal acts approximately as

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Q12

A pn junction acts as a ___________

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Q13

Addition of pentavalent impurity to a semiconductor creates many

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Q14

Addition of trivalent impurity to a semiconductor creates many

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Q15

In an intrinsic semiconductor, the number of free electrons

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Q16

A hole in a semiconductor is defined as ___________

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Q17

With forward bias to a pn junction , the width of depletion layer

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Q18

A semiconductor is formed by bonds.

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Q19

The leakage current in a pn junction is of the order of

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Q20

When the temperature of an extrinsic semiconductor is increased, the pronounced effect is on

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