Electrical Engineering Mcqs

CC configuration is used for impedance matching because its ________________?

(A) Input impedance is very high
(B) Input impedance is low
(C) Output impedance is very low
(D) None of the above

Submitted By :Ali Uppal

The d.c. load of a transistor amplifier is generally_______________ that of a a.c. load?

(A) The same as
(B) Less than
(C) More than
(D) None of the above

Submitted By :Ali Uppal

If the input capacitor of a transistor amplifier is short-circuited, then_________________?

(A) Transistor will be destroyed
(B) Biasing conditions will change
(C) Signal will not reach the base
(D) None of the above

Submitted By :Ali Uppal

A CE amplifier is also called _______________ circuit?

(A) Grounded emitter
(B) Grounded base
(C) Grounded collector
(D) None of the above

Submitted By :Ali Uppal

If a transistor amplifier feeds a load of low resistance (e.g. speaker), then voltage gain will be_______________?

(A) High
(B) Very high
(C) Moderate
(D) Low

Submitted By :Ali Uppal

The radio wave picked up by the receiving antenna is amplified about _________________ times to have reasonable sound output?

(A) 1000
(B) A million
(C) 100
(D) 10000

Submitted By :Ali Uppal

The ratio of output impedance of a CE amplifier is _______________?

(A) About 1
(B) Low
(C) High
(D) Moderate

Submitted By :Ali Uppal

An amplifier has a power gain of 100. Its db gain is ________________?

(A) 10 db
(B) 20 db
(C) 40 db
(D) None of the above

Submitted By :Ali Uppal

An advantage of RC coupling scheme is the___________?

(A) Good impedance matching
(B) Economy
(C) High efficiency
(D) None of the above

Submitted By :Ali Uppal

In an RC coupled amplifier, the voltage gain over mid-frequency range_____________?

(A) Changes abruptly with frequency
(B) Is constant
(C) Changes uniformly with frequency
(D) None of the above

Submitted By :Ali Uppal

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