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Control Systems

Control Systems
The error of a system to a ramp input is 1/5, if the type of the system is decreased by one, then the error of unit step input is

 5
 0.167
 0.2
 6/5

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Control Systems
Which system is also known as automatic control system?

 Either 1 or 2
 Nether 1 nor 2
 Closed loop control system
 Open loop control system

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Control Systems
The transfer function of a system is G(s) = 100/((s+1)(s+100)). For unit step input to the system the approximate settling time for 2% criterion is

 4 sec
 400 sec
 10 sec
 100 sec

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Control Systems
A linear time invariant system has an impulse response e2t for t > 0 . If initial condition are 0 and input is e3t, the output for t > 0 is

  e2t - e3t.
  e3t - e2t.
  e5t.
  e2t + e3t.

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Control Systems
For a unity feedback control system open loop transfer function then acceleration error constant is

 20.
 0.
 50.
 infinity.

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

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