7000+ Analog Circuits MCQ Questions and Answers Pdf - 1

Question: 1

Heat sink is used in the power amplifier circuit

(A) to increase the collector dissipation ratings of the transistor

(B) to increase the voltage gain of the power amplifier

(C) to reduce the heat loss in a transistor

(D) to increase the output power

Question: 2

Which one of the following is the main advantage of SMPS over linear power supply?

(A) low power dissipation

(B) only one stage of conversion

(C) no transformer is required

(D) no filter is required

Question: 3

Which one of the following parameters is used for distinguishing between a small signal and a large signal amplifier?

(A) input/output impedance

(B) voltage gain

(C) harmonic distortion

(D) frequency response

Question: 4

The best device for improving the switching speeds of bipolar transistors is

(A) clamping diode with zero storage time

(B) clamping diode

(C) transistor with lighter cut off frequency

(D) speed up capacitor

Question: 5

The current gain of a bipolar transistor drops at high frequencies because of

(A) parasitic inductive elements

(B) transistor capacitances

(C) the early effect

(D) high current effects in the base