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Control Systems

Control Systems
Force balancing equation for elastic element (K) is (where, x = displacement)

 K dx/dt
None of these
 K *x
 K d2x/dt2

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Control Systems
The transfer function for tachometer E(S)/θ(S) is

 KS2
 K/S
 KS
 K

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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

 infinite.
 zero.
 5.
 2.

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Control Systems
For the polynomial , number of roots which lie in the right half of s-plane is

 1
 2
 4
 3

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Control Systems
Consider a point S = -3 + j4 in the s-plane. Then for a system with the open loop transfer function ?

None of these
 either 1 or 2
 S is on root locus
 S is not on root locus

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

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

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