B CompE Bachelor of Computer Engineering Signals and Systems

Question 1

Which of the following best describes a continuous-time signal?

Accepted Answer

A signal defined for all real values of time

Answer

A signal defined only at integer time instants

Answer

A signal that takes only discrete amplitude values

Answer

A signal with finite energy and finite duration

Question 2

The Fourier Transform of a time-domain signal decomposes it into:

Accepted Answer

A continuous spectrum of sinusoidal components at different frequencies

Answer

A series of polynomial functions

Answer

A product of exponential decay terms

Answer

A set of discrete amplitude levels sampled periodically

Question 3

The integral of the unit impulse function δ(t) over all time equals:

Accepted Answer

1

Answer

0

Answer

∞

Answer

-1

Question 4

Convolution of two signals in the time domain corresponds to which operation in the frequency domain?

Accepted Answer

Multiplication

Answer

Addition

Answer

Differentiation

Answer

Integration

Question 5

The Laplace Transform of the unit impulse function δ(t) is:

Accepted Answer

1

Answer

1/s

Answer

s

Answer

e^(−s)

Question 6

The fundamental period of the signal x(t) = sin(2πt) is:

Accepted Answer

1 second

Answer

2π seconds

Answer

π seconds

Answer

0.5 seconds

Question 7

The Z-transform is primarily used for analyzing:

Accepted Answer

Discrete-time signals and systems

Answer

Continuous-time analog signals

Answer

Electromagnetic wave propagation

Answer

Thermal noise in resistors