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Control Systems

Control Systems
What is the order of a closed loop control system for a plant with a transfer function equal to G(s) = k/s²(1+Ts) and with unity feedback

 3
 2
 0
 1

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Control Systems
The transfer function of a linear time invariant system is given as G(s) = 10/(s² + 10s + 10). The steady state value of the output of the system for step input applied at time instant t=2 sec will be

 infinity
 1
 undefined
 0

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

 infinity.
 50.
 0.
 10.

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Control Systems
A proportional plus integral controller

 it increases rise time
 has high sensitivity
 increases the stability of the system
 both 2 and 3

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Control Systems
Certain control system has input u(t) and output c(t). If the input is first passed through a block having transfer function e-s and unit gain is applied to the applied to the system. The modified output will be

 c(t).u(t-1)
 c(t)u(t)
 c(t-1).u(t-1)
 c(t-1).u(t)

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Control Systems
Lead compensator is used to improve ------------------

 Steady state response
None of these
 Transient response
 Both 1 and 2

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