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Control Systems

Control Systems
Name test signals used in time response analysis?

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

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Control Systems
The transfer function of the system described by d²/dt²(y(t)) + 3d/dt(y(t)) + 2y(t) = 5u(t) with u(t) as input and y(t) as output is

 s(s²+3s+2)/5
 5/(s²+3s+2)
 5/s(s²+3s+2)
 (s²+3s+2)/5

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Control Systems
Consider the following statements for phase lead compensation:

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

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Control Systems
A control system has open loop transfer function . Break away point is lies between

 0 and -4.
 any of the above.
 0 and 4.
 -4 and -6.

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Control Systems
The output of the system has an effect upon the input quantity, then the system is a

None of these
 open loop control system.
 closed loop control system.
 either 1 or 2.

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Control Systems
The position and velocity error coefficient for the transfer function given below are respectively

 0 and 0.
 0 and infinity.
 50 and infinity.
 50 and 0.

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