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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?

 3
 2
 1
 0

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Control Systems
A function y (t) satisfies the following differential equation : Where, δ (t) is the delta function. Assuming zero initial condition and denoting the unit step function by u(t), y(t) can be formed as

 e-t.
 et.
 e-tu(t).
 etu(t).

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

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

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

 finite constant.
 indeterminate.
 infinite.
 zero.

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Control Systems
For the polynomial , find the number of roots which lie on the right half of s-plane?

 4
 2
 1
 0

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Control Systems
Two identical first order systems have been cascaded non interactively. The unit step response of the systems will be

 un damped
 under damped
 critical damped
 Over damped

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