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Control Systems

Control Systems
A open loop transfer function is given as G(s) = (s+2)/(s+1)(s-1). Find the number of encirclements about '-1+j0'?

 2
 1
 3
 0

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Control Systems
The transfer function of a system is given as below, if a = 0.1, then the steady state error to unity ramp input will be

 0.16.
 0.35.
 0.25.
 0.49.

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Control Systems
A controller transfer function is given by . What is its nature and parameter?

 lag compensator, β = 2
 lag compensator, β = 10
 lead compensator, α = 0.2
 lead compensator, α = 0.1

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Control Systems
Electrical analogous quantity for spring element (K) in force-voltage analogy is

 R
 L
 1/C
 C

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Control Systems
If two blocks having gains A and B respectively are in parallel connection, find the resultant gain using block diagram reduction technique?

 A+B
 A*B
 A/B
 2(A+B)

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Control Systems
A second order system has peak over shoot = 50% and period of oscillations 0.2 seconds. Find the resonant frequency?

 32.16 rad/s
 30.63 rad/s
 31.41 rad/s
 29.74 ra/s

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