Explore topic-wise MCQs in Signals Systems.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Signals Systems knowledge and support exam preparation. Choose a topic below to get started.

1.

In discrete signal, if y [n] = x [k*n] and k>1 then ______

A. Some samples are lost from x [n]
B. Some samples are added to x [n]
C. It has no effect on samples
D. Samples will be increased with factor k
Answer» B. Some samples are added to x [n]
Discussion
2.

Y (t) = x (t/5) is _______

A. Compressed signal
B. Expanded signal
C. Time shifted signal
D. Amplitude scaled signal by factor 1/5
Answer» C. Time shifted signal
Discussion
3.

Y (t) = x (2t) is ________

A. Compressed signal
B. Expanded signal
C. Shifted signal
D. Amplitude scaled signal by a factor of 2
Answer» B. Expanded signal
Discussion
4.

Time scaling is an operation performed on _______

A. Dependent variable
B. Independent variable
C. Both dependent and independent variable
D. Neither dependent nor independent variable
Answer» C. Both dependent and independent variable
Discussion
5.

Which of the passive component performs differentiation operation?

A. Resistor
B. Capacitor
C. Inductor
D. Amplifier
Answer» D. Amplifier
Discussion
6.

AM radio signal is an example for __________

A. y (t) = a x (t)
B. y (t) = x1 (t) + x2 (t)
C. y (t) = x1 (t) * x2 (t)
D. y (t) = -x(t)
Answer» D. y (t) = -x(t)
Discussion
7.

Which of the following is an example of physical device which adds the signals?

A. Radio
B. Audio mixer
C. Frequency divider
D. Subtractor
Answer» C. Frequency divider
Discussion
8.

Resistor performs amplitude scaling when x (t) is voltage, a is resistance and y (t) is output current.

A. True
B. False
Answer» C.
Discussion
9.

Which of the following is an example of amplitude scaling?

A. Electronic amplifier
B. Electronic attenuator
C. Both amplifier and attenuator
D. Adder
Answer» D. Adder
Discussion