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Control Systems

Control Systems
Advantages of open loop control system is/are

All of these
 reliable.
 simple and economical.
 accurate.

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Control Systems
Sparking between the contacts can be reduced by inserting

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

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Control Systems
Weighting function is in terms of -----------------

 Laplace transform of the step response
 Laplace transform of the impulse response
 Laplace transform of the ramp response
 Laplace transform of the parabolic response

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Control Systems
Find the bandwidth of the system, when rise time of the system is give as 1msec?

 750 Hz
 1 kHz
 350 Hz
 500 Hz

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Control Systems
The characteristic equation of a control system is given below: The system is

 marginally stable
 unstable
 critical stable
 stable

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

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

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