Explore topic-wise MCQs in Signals & Systems.

This section includes 12 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.

A system is said to be causal if the output of the system depends on ___________

A. The Past and Present Inputs
B. The Present Inputs
C. The Future Inputs
D. The Past and Future Inputs
Answer» B. The Present Inputs
Discussion
2.

The difference between the highest and lowest frequencies of a signal is _________

A. Frequency
B. Period
C. Bandwidth
D. Amplitude
Answer» D. Amplitude
Discussion
3.

The element which can weaken a signal system is ___________

A. Attenuation
B. Distortion
C. Noise
D. Attenuation, Distortion & Noise
Answer» E.
Discussion
4.

The system (x(k) = 7( frac{1}{3})^k ,u(-k-1) 6( frac{1}{2})^k ,u(k) ) is ___________

A. Causal
B. Anti-causal
C. Non-causal
D. Cannot be determined
Answer» D. Cannot be determined
Discussion
5.

A system is said to be dynamic if the output of the system depends on ___________

A. The past Input
B. The Future Input
C. The Present Input
D. Both the Present and future Inputs
Answer» B. The Future Input
Discussion
6.

Which of the following is true about the bounded signal?

A. A finite signal is always bounded
B. A bounded signal always possess finite energy
C. A bounded signal is always zero outside a given interval
D. A bounded signal is always finite
Answer» C. A bounded signal is always zero outside a given interval
Discussion
7.

A signal e-at sin ( t) is the input to a real linear time-invariant system. Given K and are constants, the output of the system will be of the form Ke-bt sin (vt + ). The correct statement among the following is __________

A. b need not be equal to a but v must be equal to
B. v need not be equal to but b must be equal to a
C. b must be equal to a and v must be equal to
D. b need not be equal to a and v need not be equal to
Answer» B. v need not be equal to but b must be equal to a
Discussion
8.

If y(t) = ex(t), then the relation is _________

A. Dynamic
B. Static
C. Memory
D. Memoryless but not static
Answer» C. Memory
Discussion
9.

A LTI system is characterized by ___________

A. Unit impulse response
B. Time shifted impulses
C. Unit step response
D. Response to any signal(bounded)
Answer» B. Time shifted impulses
Discussion
10.

Which of the following is a dynamic system?

A. y(n) = y(n-1) + y(n+1)
B. y(n) = y(n-1)
C. y(n) = x(n)
D. y(n) + y(n+1) + y(n+3) = 0
Answer» B. y(n) = y(n-1)
Discussion
11.

Which of the following is a causal system?

A. y(n) = 3x(n) 2x(n-1)
B. y(n) = 3x(n) + 2x(n+1)
C. y(n) = 3x(n+1) + 2x(n-1)
D. y(n) = 3x(n+1) + 2x(n-1) + x(n)
Answer» B. y(n) = 3x(n) + 2x(n+1)
Discussion
12.

Which system among the following is a time invariant system?

A. y(n) = n x(n)
B. y(n) = x(n) x(n-1)
C. y(n) = x(-n)
D. y(n) = x(n) cos 2nf
Answer» C. y(n) = x(-n)
Discussion