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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

 0
 3
 2
 1

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Control Systems
The characteristic equation has the following roots for over damped stable system?

 -2,-4
 -2,2
 -2,-2
 -2±j4

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Control Systems
Transfer function of a control system depends on

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

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

 infinity.
 0.
 10.
 50.

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Control Systems
The closed loop transfer function of a unity feedback control system is 9/(s² + 3s + 9), then the type of the system is

 2
 3
 0
 1

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Control Systems
A negative feedback closed loop control system is supplied to an input of 5 volt. The system has a forward gain of 1 and a feedback gain of 1. What is the output voltage?

 2.0 Volt.
  1.0 Volt.
  2.5 Volt.
 1.5 Volt.

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