Explore topic-wise MCQs in Digital Communications.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Communications knowledge and support exam preparation. Choose a topic below to get started.

1.

Determine the periodicity and also find whether it is a power or energy signal?
e(-at)u(t)

A. Periodic and energy signal
B. Non periodic and energy signal
C. Periodic and power signal
D. Periodic and energy signal
Answer» C. Periodic and power signal
Discussion
2.

Find the fundamental period of 1+sin^2 (3 /5)n.

A. 10/3
B. 5
C. 3 /5
D. None of the mentioned
Answer» C. 3 /5
Discussion
3.

Find the periodicity of the following signal. x(t)=cos((2 /7)t)sin((3 /5)t)

A. 30
B. 7
C. 35
D. 5/3
Answer» D. 5/3
Discussion
4.

Check whether the signal is periodic or not?
x(t) = cos(4t) + 2sin(8t)

A. Periodic with period /2
B. Periodic with period 2
C. Periodic with period 2/
D. Not periodic
Answer» B. Periodic with period 2
Discussion