Electronic Devices (AIIMS Physics): Questions 1 - 6 of 11

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Question number: 1

» Electronic Devices » Junction Transistor

Appeared in Year: 2005

MCQ▾

Question

Consider an N – P – N transistor amplifier in common-emitter configuration. The current gain of the transistor is 100. If the collector current changes by 1 mA, what will be the change in emitter current –

Choices

Choice (4) Response

a.

10 mA

b.

1.01mA

c.

1.1 mA

d.

0.01 mA

Question number: 2

» Electronic Devices » Logic Gates (Or, and, NOT, NAND and NOR)

Appeared in Year: 1999

MCQ▾

Question

Boolean algebra is essentially based on –

Choices

Choice (4) Response

a.

symbol

b.

truth

c.

logic

d.

numbers

Question number: 3

» Electronic Devices » Logic Gates (Or, and, NOT, NAND and NOR)

Appeared in Year: 2005

MCQ▾

Question

Out of the following, universal gate is –

Choices

Choice (4) Response

a.

NOT

b.

NAND

c.

AND

d.

OR

Question number: 4

» Electronic Devices » Semiconductors

Appeared in Year: 2003

MCQ▾

Question

To a germanium sample, traces of gallium are added as an impurity. The resultant sample could behave like –

Choices

Choice (4) Response

a.

an insulator

b.

a p-type semiconductor

c.

a n-type semiconductor

d.

a conductor

Question number: 5

» Electronic Devices » Junction Transistor

Appeared in Year: 2003

MCQ▾

Question

In the following common emitter configuration an ‘NPN’ transistor with current gain β=100 is used the output voltage of amplifier will be –

Choices

Choice (4) Response

a.

0.1V

b.

10V

c.

10 mV

d.

1.0 V

Question number: 6

» Electronic Devices » Semiconductors

Appeared in Year: 2005

MCQ▾

Question

In semiconducting material the mobility of electrons and holes are μe and μh respectively. Which of the following is true?

Choices

Choice (4) Response

a.

μe<μh

b.

μe=μh

c.

μe<0;μh>0

d.

μe>μh

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