DBATU Model MCQ - Signals & Systems

Welcome to your Signals & Systems, dated April 20, 2021

1. The function which relates output of a system to the input(signal) of a system isDeselect Answer

Periodic function

Non-periodic function

Transfer function

None of the above

2. A discrete signal is said to be odd or asymmetric if x(-n) is equal toDeselect Answer

X(n)

–x(-n)

∞

3. Nyquist bit rate formula defines the theoretical maximum bit rate for which channelDeselect Answer

Noisy

Noiseless

bandpass

lowpass

4. The equation y(t) = a x(t)+b comes under which systemDeselect Answer

Linear for any value of b

Linear if b > 0

Linear if b < 0

Non-linear

What form of waveform is shown here?

Deselect Answer

A Binary Signal

A Multi valued digital signal

An Analogue signal

Noise Signal

6. A continuous-time periodic signal x(t), having a period T, is convolved with itself. Then the resulting signal isDeselect Answer

Not Periodic

Periodic having a period 2T

Periodic having a period T

Periodic having a period T/2

7. The Inverse Fourier Transform of u(ω) isDeselect Answer

(1/2) δ(t) + 1/πt

( ½) δ(t)

2 δ(t) + 1/πt

δ(t) +sgn(t)

8. Find the Nyquist Frequency for the given signal x(t) =3 cos 50πt +10 sin 300πt – cos100πtDeselect Answer

50 Hz

100 Hz

200 Hz

300 Hz

9. The type of systems which are characterized by input and the output capable of taking any value in a particular set of values are called asDeselect Answer

analog

discrete

digital

continuous

10. A system is said to be stable if the bounded input to the system producesDeselect Answer

Bounded output

Non bounded output

Inbound output

Outbound output

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