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Control Systems

Control Systems
Adding a pole to a system transfer function in terms of compensator represents a --------------- compensator ?

 lead
 lag
 lead-lag
 lag-lead

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Control Systems
The type of a control system is obtained from -------------- transfer function?

 none of above.
 open loop
 closed loop
 both open loop and closed loop

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Control Systems
If the magnitude of G(jω)H(jω) at phase crossover frequency is 0.5. Find the gain margin of the given system?

 0.5
 4
 1
 2

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Control Systems
The open loop transfer function for unity feedback system is given by 5(1+0.1s) / (s(1+5s)(1+20s)) Find the steady state error for a step input of magnitude 10 is equal to

 zero.
 5.
 2.
 infinite.

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Control Systems
A proportional plus derivative controller

 both 1 and 2
 increases the stability of the system
 improves the steady state accuracy
 has high sensitivity

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Control Systems
Lowest critical frequency is due to pole and it may be present at the origin or nearer to the origin, then the type of network is

 RC.
 LC.
 RL.
 Any of the above.

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