In ideal diode model diode in forward bias is considered as a ________

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

Resistor

Capacitor

Perfect insulator

Perfect conductor

Correct Answer : Option (D) : Perfect conductor

Explanation : In ideal diode model the diode is considered as a perfect conductor in forward bias and perfect insulator in reverse bias. That is voltage drop at forward bias is zero and current through the diode at reverse bias is zero.

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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

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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

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