Analog Electronics MCQ Questions & Answers | ECE

A. Greater than +100

B. Slightly less than unity but positive

C. Exactly unity but negative

D. About -10

A. 49dB

B. 51dB

C. 98dB

D. 102dB

A. 5 Ω & 20 %

B. 25 Ω & 20 %

C. 5 Ω & 16.7 %

D. 25 Ω & 16.7 %

A. The amplitude of output is proportional to rate of change of input

B. The amplitude of output is proportional to input

C. Output occurs when input is finite and constant

D. Polarity of input and output is the same

A. Get maximum efficiency

B. Remove even harmonics

C. Overcome a crossover distortion

D. Reducing collector dissipation

A. Common base

B. Common emitter

C. Common collector

D. All have the same gain

A. Negligible input resistance and high output resistance

B. High input resistance and low output resistance

C. Medium input resistance and high output resistance

D. Low input resistance as well as output resistance

A. ac collector voltage is 180° out of phase with ac base voltage

B. ac emitter voltage is 180° out of phase with ac base voltage

C. ac collector voltage is in phase with ac base voltage

D. none of the above

A. Gate voltage

B. Drain voltage

C. Source voltage

D. Body voltage

A. Push pull signals are equal and opposite in phase

B. Class AB operation cannot be used for a push pull audio power output phase

C. A push pull output transformer has a centre-tapped primary

D. All of the above