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Control Systems

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

 0.
 10.
 infinity.
 50.

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Control Systems
Consider the function F(s) = ω/(s²+ω²). Where F(s) = Laplace transform of f(t). The final value of f(t) is equal to

 finite constant
 infinite
 zero
 a value between -1 and +1

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Control Systems
Which one of the following is the steady state error for a step input applied to a unity feedback system with the open loop transfer function G(s) = 10/(s²+14s+50)?

 infinite
 0
 1
 0.83

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Control Systems
When the input to a system was with drawn at t = 0, its output was found to decrease exponentially from 1000 units to 500 units in 1.386 sec. The time constant of the system is

 1.386.
 0.693.
 2.000.
 0.500.

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Control Systems
Which of the following controller is also known as anticipatory controller?

 integral controller
 proportional controller
 both 1 and 3
 derivative controller

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Control Systems
The transfer function for tachometer E(S)/θ(S) is

 K
 KS
 K/S
 KS2

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