BEE FREE Bachelor of Electrical Engineering Signals & Systems Questions and Answers 2

Question 1

What is the Nyquist sampling rate for a signal with a maximum frequency component of 4 kHz?

Accepted Answer

8 kHz

Answer

4 kHz

Answer

16 kHz

Answer

2 kHz

Question 2

Which property of the Fourier Transform states that multiplication in the time domain corresponds to convolution in the frequency domain?

Accepted Answer

Convolution theorem

Answer

Linearity

Answer

Duality

Answer

Parseval's theorem

Question 3

A system with impulse response h(t) = e^(-2t)u(t) is classified as what type of system?

Accepted Answer

Stable and causal

Answer

Unstable and non-causal

Answer

Stable and non-causal

Answer

Unstable and causal

Question 4

What does the Region of Convergence (ROC) of a causal signal in the Laplace domain look like?

Accepted Answer

A right-half plane extending to the right of the rightmost pole

Answer

A vertical strip

Answer

The entire s-plane

Answer

A left-half plane

Question 5

If x(t) is an even signal, what can be said about its Fourier Transform X(ω)?

Accepted Answer

X(ω) is purely real

Answer

X(ω) is purely imaginary

Answer

X(ω) is complex with equal real and imaginary parts

Answer

X(ω) is always zero

Question 6

In a discrete-time LTI system, what operation is used to find the output given the input x[n] and impulse response h[n]?

Accepted Answer

Discrete convolution

Answer

Multiplication

Answer

Correlation

Answer

Differentiation