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Control Systems

Control Systems
What is the type of closed loop system for the plant transfer function G(s) = k/s²(1+Ts) and with unity feedback?

 2
 3
 0
 1

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Control Systems
The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its closed loop transfer function is

 (2s+1)/(s+1)²
 (2s+2)/(s+1)²
 (2s+1)/s²
 (2s+2)/s²

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Control Systems
For type 1 system with parabolic input, the steady state error is

 indeterminate.
 zero.
 infinite.
 finite constant.

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Control Systems
Which of the following is/are the disadvantages of an open loop control system?

 Unreliable.
None of these
 both 1 and 2.
 Inaccurate.

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Control Systems
If a circuit consists of two mass elements, two spring elements and four friction elements. Find the order of transfer function?

 12
 2
 6
 4

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

 lead
 lead-lag
 lag
 lag-lead

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