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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?

 0
 1
 2
 3

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Control Systems
Transfer function of a control system depends on

 system parameters alone.
 nature of output.
 initial conditions of input and output.
 nature of input.

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Control Systems
By using which of the following elements, mechanical translational systems are obtained?

All of these
 spring element
 dash-pot
 mass element

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Control Systems
A second order control system is defined by the following equation: 4 d²c(t)/dt² + 8 dc(t)/dt + 16 c(t) = 16 u(t) The damping ratio and natural frequency for this system are respectively

 0.50 and 4 rad/s
 0.25 and 4 rad/s
 0.25 and 2 rad/s
 0.50 and 2 rad/s

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Control Systems
Angle condition for complimentary root locus or inverse root locus is

 ± (2q) 360°
 ± (2q + 1) 360°
 ± (2q + 1) 180°
 ± (2q) 180°

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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

 2.
 5.
 infinite.
 zero.

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