Electronics and Communication Engineering - Automatic Control Systems

21. 

For the function G(s) = the poles are at

A. s = 0 and s = ∞
B. s = j2np where n = 0, 1, 2
C. s = ± j2np where n = 0, 1, 2..
D. none of the above.

Answer: Option C

Explanation:

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22. 

Which dc servomotor has minimum inertia?

A. Slotted armature construction
B. Surface wound armature
C. Surface wound with stationary rotor
D. Either (a) or (b)

Answer: Option C

Explanation:

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23. 

Gas flow resistance is defined as

A.
B.
C. (change in gas pressure difference) x (change in gas flow rate)
D. none of the above

Answer: Option A

Explanation:

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24. 

Examine the following statements

  1. A small size hydraulic actuator can develop good torque.
  2. It is easy to maintain a hydraulic system leak proof.
  3. Both linear and rotatary hydraulic actuators are available.
  4. Hydraulic power is more easily available than electric power.
Which of the above statements are correct?

A. all
B. 1 and 2 only
C. 1 and 3 only
D. 2, 3 and 4 only

Answer: Option C

Explanation:

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25. 

The given figure shows a constant current source driving a parallel RC circuit. It is equivalent to

A. a lag network
B. a lead network
C. a lag-lead network
D. either (a) or (b)

Answer: Option A

Explanation:

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