Electronic Devices-Junction Transistor (NEET Physics): Questions 6 - 11 of 11

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Question number: 6

» Electronic Devices » Junction Transistor

MCQ▾

Question

For transistor, the current amplification factor is 0.8. The transistor is connected in common emitter configuration. The change in the collector current when the base current change by 6 mA is,

Choices

Choice (4) Response
a.

8 mA

b.

4.8 mA

c.

24 mA

d.

6 mA

Question number: 7

» Electronic Devices » Junction Transistor

MCQ▾

Question

In a transistor in CE configuration, the ratio of power gain to voltage gain is

Choices

Choice (4) Response
a.

βα

b.

βα

c.

β

d.

α

Question number: 8

» Electronic Devices » Junction Transistor

MCQ▾

Question

In the case of constants α and β of a transistor

Choices

Choice (4) Response
a.

α = β

b.

β < l, α > l

c.

α = β 2

d.

β > l, α < 1

Question number: 9

» Electronic Devices » Junction Transistor

MCQ▾

Question

A NPN transistor conducts when

Choices

Choice (4) Response
a.

Collector is positive and emitter is at same potential as the base

b.

collector and emitter are negative with respect to the base

c.

Collector is positive and emitter is negative with respect to the base

d.

collector and emitter are positive with respect to the base

Question number: 10

» Electronic Devices » Junction Transistor

MCQ▾

Question

In NPN transistor the collector current is 10 mA . If 90 % of electrons emitted reach the collector, then

Choices

Choice (4) Response
a.

Base current will be 0.01 mA

b.

Emitter current will be 9 mA

c.

Emitter current will be 11.1 mA

d.

Base current will be 0.1 mA

Question number: 11

» Electronic Devices » Junction Transistor

Appeared in Year: 2016

MCQ▾

Question

For CE transistor amplifier, the audio signal voltage across the collector resistance of 2kΩ is 4V . If the current amplification factor of the transistor is 100 and the base resistance is 1kΩ , then the input signal voltage is –

Choices

Choice (4) Response
a.

20mV

b.

10mV

c.

30mV

d.

15mV

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