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Control Systems

Control Systems
Which of the following is/are represents the lag compensator?

 (s+2)/(s+1)
 (s+5)/(s+6)
 (s+2)/(s+5)
 both 1 and 2

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

 inductor
 resistor
 capacitor
 any of the above

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Control Systems
When the polynomial is Routh Hurwitz,

 the roots of function have real parts which are to be zero/negative.
 none of these.
 all zeroes lie in the right half of the s-plane.
 the function is not real.

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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
 2(A+B)
 A*B
 A+B

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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'?

 0
 3
 1
 2

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Control Systems
Which of the following is/are the characteristics of negative feedback control system?

 Rejection of disturbance signals
 Reduction in gain at the expense of better stability
All of these
 Low sensitivity to parameter variations

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