Top 150+ Solved Communication Engineering MCQ Questions Answer
Q. To increase error probability, the processing gain should be
a. increased
b. decreased
c. exponentially increased
d. exponentially decreased
Q. Which jamming method produces greater degradation?
a. broadband jamming
b. partial jamming
c. broadband & partial jamming
d. none of the mentioned
Q. The jammer which monitors a communicator’s signal is known as
a. frequency follower jammers
b. repeat back jammers
c. frequency follower & repeat back jammers
d. none of the mentioned
Q. DS/BPSK includes
a. despreading
b. demodulation
c. despreading & demodulation
d. none of the mentioned
Q. In direct sequence process which step is performed first?
a. de-spreading
b. demodulation
c. despreading & demodulation
d. none of the mentioned
Q. Chip is defined as
a. shortest uninterrupted waveform
b. largest uninterrupted waveform
c. shortest diversion
d. none of the mentioned
Q. What do you understand by the term “carrier” in modulation?
a. voltage to be transmitted
b. resultant wave
c. voltage for which amplitude, phase or frequency can be varied
d. voltage for which amplitude, phase or frequency remains constant
Q. For a low level AM system, amplifier modulated stage must have
a. harmonic devices
b. linear devices
c. non-linear devices
d. class a amplifiers
Q. Which is the greatest disadvantage of Pulse Code Modulation?
a. highly prone to noise
b. cannot travel long distances
c. its inability to handle analog signals
d. large bandwidth is required for it
Q. Quantization noise occurs in
a. frequency division multiplexing
b. time division multiplexing
c. delta modulation
d. amplitude modulation