Which of the following oscillators is suitable for frequencies in the range of mega hertz?

Electronics and Communication Engineering (ECE) : Analog Electronics - Quiz(MCQ)

Wien bridge

Hartley

RC phase shift

Both (A) and (C)

Correct Answer : Option (B) : Hartley

Explanation : Only LC oscillators are suitable for MHz range.

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A junction Field Effect Transistor can operate in

depletion mode only

enhancement mode only

depletion and enhancement modes

neither depletion nor enhancement modes

Correct Answer : depletion mode only

In a base driver amplifier the voltage gain is the ratio of

ac emitter voltage to ac base voltage

ac collector voltage to ac base voltage

ac base voltage to ac emitter voltage

ac collector voltage to ac emitter voltage

Correct Answer : ac collector voltage to ac base voltage

In a CE amplifier it is desired that the signal should be able to swing equally in both directions. Then the Q point should be

at the centre of dc load line

at the centre of collector voltage

at the centre of ac load line

at the centre of collector current

Correct Answer : at the centre of ac load line