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Control Systems

Control Systems
Name test signals used in time response analysis?

  Unit step.
  Unit ramp.
  All of B, C, D.
  Impulse.

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Control Systems
A transfer function has a zero at s = -1 and poles at s = -1 ± j1. The multiplier being unity, if the input is step function, the steady state response is given by

 0.5∠0°
 0.5∠10°
 2∠90°
 1∠0°

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Control Systems
Which of the following is/are the disadvantages of an open loop control system?

 Unreliable.
None of these
 both 1 and 2.
 Inaccurate.

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Control Systems
The following transfer function represents a phase-lead compensator?

 (s+4)/(s+6)
 (s+4)/(3s+6)
 1/s
 (4s+2)/(6s+1)

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Control Systems
Settling time for 5% tolerance band is -------------

 2T.
 3T.
 5T.
 4T.

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Control Systems
Transfer function of a control system depends on

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

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