Electrical Engineering MCQs

Page No. 136

Negative feedback is employed in __________________?


aOscillators

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b Rectifiers

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cAmplifiers

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dNone of the above

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View Answer Amplifiers

The voltage gain of a transistor connected in common collector arrangement is____________?


aequal to 1

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bmore than 10

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cmore than 100

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dless than 1

✓


View Answer less than 1

The voltage gain in a transistor connected in___________arrangement is the highest?


acommon base

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bcommon collector

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c common emitter

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dnone of the above

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View Answer common emitter

A feedback circuit usually employs _________________ network?


aResistive

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bCapacitive

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c Inductive

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dNone of the above

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View Answer Resistive

The power gain in a transistor connected in___________arrangement is the highest?


acommon emitter

✓


bcommon base

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c common collector

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dnone of the above

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View Answer common emitter

The input impedance of a transistor connected in___________arrangement is the highest?


acommon emitter

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bcommon collector

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ccommon base

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dnone of the above

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View Answer common collector

The value of ß for a transistor is generally____________?


a1

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bless than 1

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cbetween 20 and 500

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dabove 500

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View Answer between 20 and 500

When current feedback (negative) is applied to an amplifier, its input impedance _____________?


a Is decreased

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bIs increased

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cRemains the same

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dNone of the above

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View Answer Is decreased

If the feedback fraction of an amplifier is 0.01, then voltage gain with negative feedback is approximately________________?


a500

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b 100

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c1000

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d5000

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View Answer 100

The gain of an amplifier with feedback is known as____________gain?


aResonant

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b Open loop

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c Closed loop

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d None of the above

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View Answer Closed loop

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