Exercise: Automatic Control Systems

Questions for: Automatic Control Systems

In op-amp circuit of the given figure, Eo(s)/Ei(s) =
A:
B:
C:
D:
Answer: A

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If the Nyquist plot does not encircle the (-1 + j0) point the system is always stable.
A:
True
B:
False
C:
D:
Answer: B

It is not necessary.

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For the equation where Q is heat energy Gt is thermal conductance and θ is temperature, analogous electrical equation is
A:
i = G(v1 - v2)
B:
C:
D:
Answer: A

Temperatures θ1 and θ2 are analogous to voltage v1 and v2 .

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Assertion (A): Positive feedback is not used in any circuit.

Reason (R): Positive feedback leads to instability.

A:
Both A and R are correct and R is correct explanation of A
B:
Both A and R are correct but R is not correct explanation of A
C:
A is correct but R is wrong
D:
R is correct but A is wrong
Answer: D

Positive feedback is used in oscillator circuits.

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A unity feedback system has open loop transfer function The closed loop transfer function is
A:
B:
C:
D:
Answer: C

.

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