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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
 0
 3

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Control Systems
Slope of asymptote in Bode plot of 2nd order system is _____________________ per octave.

 3 dB
 18 dB
 12 dB
 6 dB

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Control Systems
In signal flow graph output node is node having only------------

 incoming branches
None of these
 both 1 and 2
 outgoing branches

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Control Systems
Differentiation of parabolic response is a -------------- response?

 parabolic
 ramp
 impulse
 step

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Control Systems
The system function N(s) = V(s)/I(s) = (s+3)/(4s+5). The system is initially at rest. If the excitation i(t) is a unit step, which of the following is the final value?

 1/4
 0
 1
 3/5

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Control Systems
Advantages of open loop control system is/are

All of these
 accurate.
 simple and economical.
 reliable.

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