Related Questions

When negative voltage feedback is applied to an amplifier, its voltage gain ___________
A Is increased
B Is reduced
C Remains the same
D None of the above
If the current gain of the amplifier is X, its voltage gain is Y, then its power gain will be
A $$\frac{{\text{X}}}{{\text{Y}}}$$
B X × Y
C X + Y
D X - Y
When voltage feedback (negative) is applied to an amplifier, its input impedance ___________
A Is decreased
B Is increased
C Remains the same
D None of the above
When current feedback (negative) is applied to an amplifier, its input impedance ___________
A Is decreased
B Is increased
C Remains the same
D None of the above
If voltage feedback (negative) is applied to an amplifier, its output impedance ___________
A Remains the same
B Is increased
C Is decreased
D None of the above
Regenerative feedback implies feedback with
A Oscillations
B Step input
C Negative sign
D Positive sign
Voltage Series (feedback also called series-shunt feedback) results in
A Increase in both input & output impedances
B Decreases in both input & output impedances
C Increase in input impedance & decreases in output impedance
D Decrease in input impedance & increase in output impedance
In closed loop control system, with positive value of feedback gain the overall gain of the system will
A Decrease
B Increase
C Be unaffected
D Exponentially increase
A class A power amplifier is sometimes called ___________ amplifier
A Symmetrical
B Single-ended
C Reciprocating
D Differential
The bandwidth of a single stage amplifier is ___________ that of a multistage amplifier
A More than
B The same as
C Less than
D Data insufficient

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