Ac signals are given to both inverting and non-inverting terminals of an op-amp. When will the output maximum

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

when the phase difference between the inputs is 0 or 180Â°

when the phase difference between the inputs is 180Â°

when the phase difference between the inputs in 90Â°

when the phase difference between the inputs is 0Â°

Correct Answer : Option (B) : when the phase difference between the inputs is 180Â°

Explanation : For non-inverting terminal input, output is in phase with input. For inverting terminal input, output is 180° out of phase with input. If inputs have 180° phase difference, outputs will be in phase and additive.

Recently Updated in Analog Electronics Questions

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

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