Electronics and Communication Engineering - Automatic Control Systems

1. 

A phase lead network with where a < 1, gives maximum phase lead at a frequency equal to

A.
B.
C.
D.

Answer: Option C

Explanation:

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2. 

Generally a servomotor operates at

A. high torque and high speed
B. low torque and low speed
C. low torque and high speed
D. high torque and low speed

Answer: Option C

Explanation:

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3. 

If C is thermal capacitance, m is mass of liquid and c is specific heat, then

A. C = mc
B. c = mC
C. m = cC
D. C = (mc)2

Answer: Option A

Explanation:

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4. 

Assertion (A): The concept of impulse function is useful in differentiating discontinuous functions.

Reason (R):

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: Option A

Explanation:

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5. 

In a two phase servomotor, if R is rotor resistance, X is rotor reactance, L is rotor length D is rotor diameter then

A. and are both small
B. is large but is small
C. is small but is large
D. and are both large

Answer: Option C

Explanation:

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