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Control Systems

Control Systems
Type and order of transfer function G (s) = K / {s(s + 2)}

 0, 2.
 1, 2.
 1, 1.
 2, 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
Transfer function of a control system depends on

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

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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.
 0.500.
 0.693.
 2.000.

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Control Systems
The characteristic equation of a control system is given below: The system is

 stable
 unstable
 critical stable
 marginally stable

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Control Systems
The transfer function of a system is G(s) = 100/((s+1)(s+100)). For unit step input to the system the approximate settling time for 2% criterion is

 4 sec
 10 sec
 100 sec
 400 sec

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