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Control Systems

Control Systems
Find the corner frequency for the following transfer function? G(s) = 1/(s+2)

 4 rad/s
 1/2 rad/s
 2 rad/s
 1/4 rad/s

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Control Systems
A first order control system is initially at 0 V and subjected to a sudden input at t=0. Its output reaches 1.1 V in 4 sec and eventually reaches steady state of 2 V. Find the time constant?

 5 sec
 6 sec
 4 sec
 2 sec

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Control Systems
The error of a system to a ramp input is 1/5, if the type of the system is decreased by one, then the error of unit step input is

 6/5
 0.167
 5
 0.2

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Control Systems
A proportional plus integral controller

 it increases rise time
 has high sensitivity
 both 2 and 3
 increases the stability of the system

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Control Systems
Electrical analogous element for damper element (force-voltage analogy) in mechanical translation system is

 resistor
 capacitor
 inductor
 any of the above

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Control Systems
What will be the type of the system, if the steady state performance of control system yields a non zero finite value of the velocity error constant?

 type - 1
 type - 0
 type - 3
 type - 2

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