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Control Systems

Control Systems
The impulse response of a linear system is e-t, (t > 0). The corresponding transfer function is

 1/s
 s/(s+1)
 1/(s+1)
 1/s(s+1)

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Control Systems
Adding a pole to a system transfer function in terms of compensator represents a --------------- compensator ?

 lag-lead
 lead-lag
 lead
 lag

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Control Systems
Which of the following is/are the disadvantages of an open loop control system?

None of these
 Inaccurate.
 Unreliable.
 both 1 and 2.

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

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

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Control Systems
Sparking between the contacts can be reduced by inserting

  a capacitor in parallel with the contacts.
 a capacitor in series with the contacts.
 a reactor in the line.
 a resistor in the line.

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Control Systems
A control system has open loop transfer function . Break away point is lies between

 0 and 4.
 0 and -4.
 -4 and -6.
 any of the above.

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