Electronics and Communication Engineering - Automatic Control Systems

46. 

The transfer function G(s) of a PID controller is

A.
B. K [1 + Tts + Tds]
C.
D.

Answer: Option A

Explanation:

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47. 

In a proportional plus integral control action

A. proportional gain Kp is adjustable but integral time Ti is constant
B. proportional gain Kp is adjustable but integral time Ti is adjustable
C. both proportional gain Kp and integral time Ti are adjustable
D. both proportional gain Kp and integral time Ti are constant

Answer: Option C

Explanation:

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48. 

An RLC series circuit has

If poles p1 and p1* are close to jω axis, then

A. resonant frequency is high
B. Q is high
C. bandwidth is large
D. Q is low

Answer: Option C

Explanation:

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49. 

A reactance function

A. has a pole at origin
B. has a zero at origin
C. may have a pole or zero at origin
D. has a pole or zero at origin and a pole or zero at infinity

Answer: Option D

Explanation:

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50. 

Given figure shows a magnitude Bode plot. The transfer function for this plot is

A.
B.
C.
D.

Answer: Option C

Explanation:

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