Signals and Systems Short Questions and Answers

41 An example of a discrete set of information/system is

[A] the trajectory of the Sun

[B] data on a CD

[C] universe time scale

[D] movement of water through a pipe

Answer: data on a CD

42 A system which is linear is said to obey the rules of

[A] scaling

[B] additivity

[C] both scaling and additivity

[D] homogeneity

Answer: both scaling and additivity

43 A time invariant system is a system whose output

[A] increases with a delay in input

[B] decreases with a delay in input

[C] remains same with a delay in input

[D] vanishes with a delay in input

Answer: remains same with a delay in input

44 All real time systems concerned with the concept of causality are

[A] non causal

[B] causal

[C] neither causal nor non causal

[D] memoryless

Answer: causal

45 When we take up design of systems, ideally how do we define the stability of a system?

[A] A system is stable, if a bounded input gives a bounded output, for some values of the input

[B] A system is unstable, if a bounded input gives a bounded output, for all values of the input

[C] A system is stable, if a bounded input gives a bounded output, for all values of the input

[D] A system is unstable, if a bounded input gives a bounded output, for some values of the input

Answer: A system is stable, if a bounded input gives a bounded output, for all values of the input

46 All causal systems must have the component of

[A] memory

[B] time invariance

[C] stability

[D] linearity

Answer: memory

47 What is the area of a Unit Impulse function?

[A] Zero

[B] Half of Unity

[C] Depends on the function

[D] Unity

Answer: Unity

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Signals and Systems MCQs | Signals and Systems Short Questions and Answers

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