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Control Systems

Control Systems
Force balancing equation of a dash-pot element is (where, x = displacement)

 B dx/dt
 B d2x/dt2
None of these
 B *x

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Control Systems
The transfer function for tachometer E(S)/θ(S) is

 K/S
 KS2
 K
 KS

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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
 4 rad/s
 1/2 rad/s

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Control Systems
Let P = Number of open loop poles and Z = Number of open loop zeros and P > Z, find the number of branches terminating at ∞?

 P
 Any of the above
 P - Z
 Z

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Control Systems
The output of the system has an effect upon the input quantity, then the system is a

None of these
 either 1 or 2.
 open loop control system.
 closed loop control system.

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Control Systems
The phase of lead compensator of the system G ( s ) = ( s + a ) / ( s + b ) is at its maximum at:

  a / b.
  ab.
  √( ab ).
 √( a / b).

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