Control Systems MCQ Questions & Answers

31

In force current analogy, displacement x is analogous to

A) Charge B) Magnetic flux linkage C) Electrostatic energy D) Voltage

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Answer & Solution

Answer: Option B

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32

If the poles lie in second quadrant, damping ratio is

A) 1 B) less than 1 C) zero D) more than 1

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Answer & Solution

Answer: Option B

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33

If poles lie in first quadrant, damping ratio is

A) 1 B) More than 1 C) less than 1 D) Zero

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Answer & Solution

Answer: Option C

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34

In a simple on-off controller with differential gap, the magnitude of differential gap determines

A) The level of accuracy B) The life of controller C) Both (a) and (b) D) Neither (a) nor (b)

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Answer & Solution

Answer: Option C

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35

Bandwidth is proportional to speed of response.

A) True B) False

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Answer & Solution

Answer: Option A

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36

Which of the following is correct?

A) Speed torque characteristics of permanent magnet dc servomotor is more flat than that of wound field dc servomotor B) Speed torque characteristics of wound field dc servo- motor is more flat than that of per-manent magnet dc servo motor C) Speed torque characteristics of wound field and permanent magnet dc servomotor are equally flat D) None of the above

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Answer & Solution

Answer: Option A

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37

The distance of poles from origin depends on

A) Uqndamped natural frequency B) Damping ratio C) Both A and B D) Neither A nor B

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Answer & Solution

Answer: Option A

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38

The permanent magnet field system of brushless dc servo- motor is generally on

A) Stator B) Rotor C) Partly on stator and partly on rotor D) Either (a) or (b)

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Answer & Solution

Answer: Option B

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39

For any transfer function, the constant phase angle loci are

A) A family of circles B) A family of straight lines C) Either (a) or (b) D) Neither (a) nor (b)

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Answer & Solution

Answer: Option A

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40

The addition of a pole to the open loop transfer function pulls the root locus

A) To the right B) To the left and making the system more stable C) Towards right or left depending on the position of new pole D) None of the above

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Answer & Solution

Answer: Option A

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Control Systems MCQ Questions & Answers | ECE