System Function MCQs

Practice System Function MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1

Signals & SystemsSystem Function

For an LTI system with impulse response h(t)=e^(-2t)u(t), the transfer function H(s) is?

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Correct Answer: A. 1/(s+2)

Explanation: The Laplace transform of e^(-2t)u(t) is 1/(s+2), with ROC Re{s}>-2.

Reference: Standard signals and systems: system function

Question 2

Signals & SystemsSystem Function

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Correct Answer: A. e^(-4t)u(t)

Explanation: The inverse Laplace transform of 1/(s+4) with a right-sided ROC is e^(-4t)u(t).

Reference: Standard signals and systems: system function

Question 3

Signals & SystemsSystem Function

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Correct Answer: B. -1 and -5

Explanation: Poles are roots of the denominator, hence s=-1 and s=-5.

Reference: Standard signals and systems: system function

Question 4

Signals & SystemsSystem Function

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Correct Answer: A. s=-2

Explanation: A finite zero is a root of the numerator, so s+2=0 gives s=-2.

Reference: Standard signals and systems: system function