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Control Systems

Control Systems
Settling time for 5% tolerance band is -------------

 5T.
 3T.
 2T.
 4T.

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Control Systems
Which of the following is/are the characteristics of negative feedback control system?

All of these
 Low sensitivity to parameter variations
 Rejection of disturbance signals
 Reduction in gain at the expense of better stability

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Control Systems
The open loop transfer function of a unity feedback control system is given by G(s) = k/s(s+1). If the gain k is increased to infinity, then damping ratio will tend to become

 zero
 infinite
 0.707
 unity

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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

 1
 0
 2
 3

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

 0.
 infinity.
 20.
 40.

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Control Systems
Transfer function of a control system depends on

 nature of input.
 initial conditions of input and output.
 system parameters alone.
 nature of output.

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