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Control Systems

Control Systems
The compensator would provide a maximum phase shift of

 30o.
 60o.
 45o.
 20o.

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Control Systems
Transfer function of a control system depends on

 nature of output.
 nature of input.
 initial conditions of input and output.
 system parameters alone.

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Control Systems
Consider the following statements for phase lead compensation:

 Phase lead compensation shifts the gain crossover frequency to the right
 both 1 and 2
 The maximum phase lag occurs at the arithmetic mean of the two corner frequencies.
 nether 1 nor 2

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Control Systems
To achieve the optimum transient response, the indicating instruments are so designed as to

 provide damping which is slightly more than the critical value.
 be undamped.
 be critically damped.
 provide damping which is slightly less than the critical value.

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Control Systems
Which of the following transfer functions represent under damped second order systems?

 2/(s² + 2s + 2)
 1/(s² + s + 1)
All of these
 4/(s² + 2s + 4)

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Control Systems
A ramp input applied to an unity feedback system results in 5% steady state error. The type number of the system is...........?

 2
 5
 1
 3

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