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Control Systems

Control Systems
The phase margin of a system having the loop transfer function G(s)H(s) = 2√3/s(s+1) is

 45°
 80°
 60°
 30°

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Control Systems
For type 1 system with parabolic input, the steady state error is

 indeterminate.
 finite constant.
 zero.
 infinite.

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Control Systems
Negative feedback in a closed loop control system

 improves disturbance rejection.
 reduces sensitivity to parameter variation.
All of these
 reduces gain.

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Control Systems
The device necessarily used for automatic temperature control in a furnace is

 Any of above.
 Auto-transformer.
 Thermocouple.
 Thermostat.

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Control Systems
Which of the following is/are represents the lead compensator?

 (s+5)/(s+6)
 both 2 and 3
 (s+2)/(s+1)
 (s+2)/(s+5)

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Control Systems
Time constant is defined as the time taken by the response of the system to reach ----------- ?

 50% of the final value
 70.7% of the final value
 63% of the final value
 100% of the final value

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