Communication Systems MCQ Questions & Answers | ECE

A. Large bandwidth is required

B. Quantising noise can be overcome by companding

C. Quantising noise can be reduced by decreasing the number of standard levels

D. Suffers from the disadvantage of its incompatibly with TDM

A. 200 and 1.01

B. 200 and 10.01

C. 200 and 100.1

D. 200 and 200

A. Laser beam for both recording and playback

B. Laser beam for recording and video head for playback

C. Video head for recording and laser beam for playback

D. None of the above

A. 2

B. 3

C. 1

D. -3

A. Shunt capacitance

B. Series capacitance

C. Inductance

D. Resistance

A. High output power is needed

B. High modulating power is needed

C. Noise is very high for high frequency

D. Large bandwidth is required

A. It reduces the bandwidth requirement to half

B. It avoids phase distortion at low frequencies

C. It results in better reception

D. None of the above

A. PCM

B. PWM

C. Delta modulation

D. Differential PCM

A. Zero capacity

B. Infinite capacity

C. Small capacity

D. None of the above

A. Is the same as that of dipole

B. Is less than that of dipole

C. Is more than that of dipole

D. May be equal, more or less than that of dipole