Explore topic-wise MCQs in Signals & Systems.

This section includes 7 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.

When are LTI systems stable?

A. Only when bounded input produces a bounded output
B. Only when bounded input produces a unbounded output
C. Only when unbounded input produces a bounded output
D. Only when unbounded input produces an unbounded output
Answer» B. Only when bounded input produces a unbounded output
Discussion
2.

Which of the following system is causal?

A. y[n] = 2[n] 3[n+1]
B. y[n] = 2[n] + 3
C. y[n] = 2[n-7] 3[n+1]
D. y[n] = 2[n]*3[n+1]
Answer» C. y[n] = 2[n-7] 3[n+1]
Discussion
3.

When a discrete time LTI system is said to be causal?

A. Output y[n] must not depend on x[k] for k>n
B. Output y[n] must not depend on x[k] for k=n
C. Output y[n] must not depend on x[k] for k<n
D. Output y[n] must depend on x[k] for k>n
Answer» B. Output y[n] must not depend on x[k] for k=n
Discussion
4.

An important property for causality of the system is __________

A. Initial rest
B. Final rest
C. It is memoryless
D. It is unstable
Answer» B. Final rest
Discussion
5.

A continuous time LTI system is causal only when __________

A. It depends on the present value of the input
B. It depends on the past values of the input
C. Its output always depends on future values of the input
D. Its output might depend only on the past and present values of the system
Answer» E.
Discussion
6.

Which property of an LTI system does the following equation prove h[n]*h1[n]= [n]?

A. Invertibility
B. Stability
C. Associativilty
D. Commutative
Answer» B. Stability
Discussion
7.

What are the properties of an LTI system posse other than Associative, Commutative and Distributive properties?

A. Memory, invertibility, causality, stability
B. Memory and non-causality
C. Invertibility and stability
D. Causality only
Answer» B. Memory and non-causality
Discussion