Base Band Transmission - Electronic Engineering (MCQ) questions & answers

1)   The transmission bandwidth of the raised cosine spectrum is given by

a. Bt = 2w(1 + α)
b. Bt = w(1 + α)
c. Bt = 2w(1 + 2α)
d. Bt = 2w(2 + α)
Answer  Explanation 

ANSWER: Bt = 2w(1 + α)

Explanation:
No explanation is available for this question!
2)   Zero forced equalizers are used for

a. Reducing ISI to zero
b. Sampling
c. Quantization
d. None of the above
Answer  Explanation 

ANSWER: Reducing ISI to zero

Explanation:
No explanation is available for this question!
3)   Equalization in digital communication

a. Reduces inter symbol interference
b. Removes distortion caused due to channel
c. Is done using linear filters
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
No explanation is available for this question!
4)   The difficulty in achieving the Nyquist criterion for system design is

a. There are abrupt transitions obtained at edges of the bands
b. Bandwidth criterion is not easily achieved
c. Filters are not available
d. None of the above
Answer  Explanation 

ANSWER: There are abrupt transitions obtained at edges of the bands

Explanation:
No explanation is available for this question!
5)   The Nyquist theorem is

a. Relates the conditions in time domain and frequency domain
b. Helps in quantization
c. Limits the bandwidth requirement
d. Both a and c
Answer  Explanation 

ANSWER: Both a and c

Explanation:
No explanation is available for this question!
6)   Nyquist criterion helps in

a. Transmitting the signal without ISI
b. Reduction in transmission bandwidth
c. Increase in transmission bandwidth
d. Both a and b
Answer  Explanation 

ANSWER: Both a and b

Explanation:
No explanation is available for this question!
7)   Roll - off factor is defined as

a. The bandwidth occupied beyond the Nyquist Bandwidth of the filter
b. The performance of the filter or device
c. Aliasing effect
d. None of the above
Answer  Explanation 

ANSWER: The bandwidth occupied beyond the Nyquist Bandwidth of the filter

Explanation:
No explanation is available for this question!
8)   The filter used for pulse shaping is

a. Raised - cosine filter
b. Sinc shaped filter
c. Gaussian filter
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
No explanation is available for this question!
9)   The criterion used for pulse shaping to avoid ISI is

a. Nyquist criterion
b. Quantization
c. Sample and hold
d. PLL
Answer  Explanation 

ANSWER: Nyquist criterion

Explanation:
No explanation is available for this question!
10)   Pulse shaping is done

a. to control Inter Symbol Interference
b. by limiting the bandwidth of transmission
c. after line coding and modulation of signal
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
No explanation is available for this question!
1 2 3

Related Content

▲