Electronic Devices (AIIMS (All India Institute of Medical Sciences) Physics): Questions 7 - 11 of 11

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Question number: 7

» Electronic Devices » Junction Transistor

Appeared in Year: 2004

Assertion-Reason▾

Question

Assertion (Ꭺ)

In a transistor the base is made thin.

Reason (Ꭱ)

Thin base makes the transistor stable.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Ꭺ is true but Ꭱ is false

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Question number: 8

» Electronic Devices » Junction Transistor

MCQ▾

Question

Consider an N – P – N transistor amplifier in common-emitter configuration. The current gain of the transistor is 80. If the collector current changes by 4 mA, what will be the change in emitter current –

Choices

Choice (4) Response

a.

1.04mA

b.

20 mA

c.

4.05 mA

d.

1.5 mA

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Question number: 9

» Electronic Devices » Junction Transistor

MCQ▾

Question

In an NPN transistor amplifier for common – emitter configuration, the current gain of the transistor is 160 and the collector current changes by 0.8 mA, so find the change in emitter current.

Choices

Choice (4) Response

a.

1.805mA

b.

0.08 mA

c.

1.8 mA

d.

0.805 mA

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Question number: 10

» Electronic Devices » Junction Transistor

MCQ▾

Question

Consider an N – P – N transistor amplifier in common-emitter configuration. The current gain of the transistor is 90. If the collector current changes by 2 mA, what will be the change in emitter current –

Choices

Choice (4) Response

a.

1.01mA

b.

2.2 mA

c.

2.02 mA

d.

0.2 mA

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Question number: 11

» Electronic Devices » Semiconductor Diode

Appeared in Year: 2004

MCQ▾

Question

A Ge specimen is doped with Al. The concentration of acceptor atoms Given that the intrinsic concentration of electron – hole pairs is, the concentration of electrons in the specimen is –

Choices

Choice (4) Response

a.

b.

c.

d.

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