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Control Systems

Control Systems
Electrical analogous quantity for spring element (K) in force-voltage analogy is

 L
 C
 1/C
 R

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Control Systems
Time constant is defined as the time taken by the response of the system to reach ----------- ?

 50% of the final value
 100% of the final value
 70.7% of the final value
 63% of the final value

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Control Systems
The transfer function of a plant is T(s) = 5/(s+5)(s² + 5 + 1). The second order approximation of T(s) using dominant pole concept is

 1/(s² + 5 + 1)
 5/(s+1)(s+5)
 1/(s+1)(s+5)
 5/(s² + 5 + 1)

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Control Systems
The compensator would provide a maximum phase shift of

 30o.
 60o.
 45o.
 20o.

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Control Systems
In force-current analogy, electrical analogous quantity for displacement (x) is

 inductance.
 capacitance.
 voltage.
 flux.

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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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