1000+ Analog Electronics MCQ Questions and Answers Pdf - 3

Question: 11

An ideal op-amp has

(A) infinite input impedance and zero output impedance

(B) low input impedance and infinite output impedance

(C) very low input and output impedance

(D) infinite input and output impedance

Question: 12

Of the various capacitances associated with a junction transistor, the gain bandwidth product is affected with a maximum extent by

(A) base emitter diffusion capacitance

(B) base emitter space charge layer capacitance

(C) base collector space charge layer capacitance

(D) base collector parasitic capacitance

Question: 13

Low frequency response of RC coupled amplifier can be improved by

(A) decreasing the value of the coupling capacitor

(B) increasing the value of bypass capacitor only

(C) increasing the value of the bypass capacitor and coupling capacitor

(D) increasing the value of the coupling capacitor only

Question: 14

The ideal dc output of a comparator filter is equal to

(A) average value of rectified voltage

(B) average value of rectified current

(C) rms of rectified voltage

(D) peak value of rectified voltage

Question: 15

If a negative feedback amplifier, when is the input impedance increased?

(A) if the feedback signal is a voltage

(B) if the feedback signal is a current

(C) if the signal sampled is a current

(D) if the signal sampled is a voltage