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Control Systems

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

 0.
 20.
 infinity.
 40.

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Control Systems
A unity feed back system has forward transfer function The range of k for the system to be stable is

 0 < k < 3900.
 0 < k < 390.
 0 < k < 39.
None of these

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Control Systems
The transfer function of a system is 10/(1 + S) when operated as a unity feedback system, the steady state error to a unit step input will be

 1/11.
 Zero.
 10.
 ¾.

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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

 2.000.
 0.500.
 0.693.
 1.386.

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Control Systems
The step response of the system described by the differential equation will be

 e-3t u(t).
 non of above.
 (1/6)*(1-e-6t).
 e6t.

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Control Systems
The Laplace transformation of f(t) is F(S) given the final value of f(t) is

 Zero.
 One.
 None of them.
 Infinite.

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