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Control Systems

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

 KS
 K
 K/S
 KS2

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Control Systems
The characteristic equation for closed loop system is given as . The value of k for which the system becomes just stable is

 4
 8
 6
 2

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Control Systems
Transfer function of zero order hold response is

 (1 / s) × (1 - est).
 (1 / s) × e-st.
 (1 / s) × (1 - e-st).
 (s) × (1 - est).

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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.
 5.
 zero.
 2.

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Control Systems
Error at corner frequency ωcf of first order control system is -------

 ±4 db
 ±1 db
 ±3 db
 ±2 db

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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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