Electronics and Communication Engineering - Automatic Control Systems

1. 

Which of the following is used to obtain output position in a position control system?

A. Strain gauge
B. Load cell
C. Synchro
D. Thermistor

Answer: Option B

Explanation:

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2. 

In a synchro transmitter-control transformer, the voltage induced in rotor winding of control transformer is zero when the angular displacement between rotors of transmitter and transformer is

A.
B. 90°
C. 180°
D. either (a) or (c)

Answer: Option B

Explanation:

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3. 

In the given figure, the curves 1, 2, 3 are respectively for

A. all pass, minimum phase and non-minimum phase functions
B. minimum phase, all pass and non-minimum phase functions
C. non-minimum phase, all pass and minimum phase functions
D. minimum phase, non-minimum phase and all pass functions

Answer: Option B

Explanation:

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4. 

In the given figure, the number of individual loops is

A. 2
B. 4
C. 5
D. 6

Answer: Option C

Explanation:

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5. 

DC tachogenerator can be used in

A. speed control system
B. position control system
C. both (a) and (b)
D. neither (a) nor (b)

Answer: Option C

Explanation:

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