Digital Communication MCQ Questions & Answers | ECE

A. 2^-10

B. 2^-8

C. 2^-6

D. 2^-4

A. Block codes

B. Line codes

C. Convolutional codes

D. Cyclic codes

A. DPSK requires less bandwidth compared coherent PSK

B. DPSK receiver design is simple compared to coherent PSK

C. DPSK Bit Error rate is lower than coherent PSK

D. For same bandwidth, DPSK bit rate is higher compared to coherent PSK

A. fixed and the repetition rate is also fixed

B. fixed but the repetition rate is also fixed

C. variable and the repetition rate is also variable

D. variable but the repetition rate is fixed

A. The transmitted power is independent of data

B. Every signal is orthogonal to every other signal

C. No signal is orthogonal to any other signal

D. Some signals are orthogonal to some others

A. an ADC

B. an integrator

C. a band pass filter

D. a high pass filter

A. 14 bits

B. 20 bits

C. 1024 bits

D. 100 bits

A. $$\frac{{{\text{NZ}}}}{{12}}$$

B. $$\frac{{{{\text{Z}}^2}}}{{12}}$$

C. $$\frac{{{{\text{Z}}^2}}}{{12{\text{N}}}}$$

D. $$\frac{{{\text{N}}{{\text{Z}}^2}}}{{12}}$$

A. 1 and 2 only

B. 2 and 3 only

C. 1 and 3 only

D. 1, 2 and 3

A. 45 µsec

B. 200 µsec

C. 50 µsec

D. 250 µsec