Transfer Functions MCQs

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

Question 1

Control SystemsTransfer Functions

For forward transfer function G(s) and negative feedback H(s), the closed-loop transfer function C(s)/R(s) is?

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Correct Answer: A. G(s)/(1+G(s)H(s))

Explanation: For standard negative feedback, the closed-loop transfer function is G/(1+GH).

Reference: Standard control systems: transfer functions

Question 2

Control SystemsTransfer Functions

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Correct Answer: A. Laplace transform of output divided by Laplace transform of input

Explanation: The transfer function is G(s)=C(s)/R(s) under zero initial conditions.

Reference: Standard control systems: transfer functions

Question 3

Control SystemsTransfer Functions

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Correct Answer: B. Denominator zero

Explanation: Poles are the roots of the denominator polynomial after pole-zero cancellations are accounted for.

Reference: Standard control systems: transfer functions

Question 4

Control SystemsTransfer Functions

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Correct Answer: B. s=-5

Explanation: The denominator is zero when s+5=0, giving the pole s=-5.

Reference: Standard control systems: transfer functions

Question 5

Control SystemsTransfer Functions

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Correct Answer: A. s=-2

Explanation: The numerator becomes zero at s=-2.

Reference: Standard control systems: transfer functions