Communication Systems MCQ Questions & Answers | ECE

A. FSK

B. Two tone modulation

C. PCM

D. Single tone modulation

A. Produce balanced modulation of a carrier wave

B. Produce 100% modulation

C. Suppress carrier signal in order to create a single-sideband or double sideband

D. Limit noise picked by a receiver

A. Amplitude of distant sidebands decreases

B. Amplitude of distant sidebands increases

C. Amplitude of distant sidebands remains constant

D. Amplitude of distant sidebands first increases, then decreases

A. True

B. False

A. The reflected colour

B. The wavelength transmitted through it

C. Reflected colour for opaque object and wavelength transmitted through it for transparent objects

D. None of the above

A. PCM

B. PSK

C. DM

D. All

A. Both A and R are correct and R is correct explanation of A

B. Both A and R are correct but R is not correct explanation of A

C. A is correct but R is wrong

D. A is wrong but R is correct

A. Pulse Analogue Modulation

B. Phase Analogue Modulation

C. Pulse Amplitude Modulation

D. Phase Amplitude Modulation

A. Stepped index operation

B. Impurities

C. Microbending

D. Attenuation in glass

A. Amplifiers low frequency signals

B. Reduces the amplitude of signals

C. Eliminates any change in amplitude of received FM signals

D. None of the above