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Control Systems

Control Systems
The phase margin of a system having the loop transfer function G(s)H(s) = 2√3/s(s+1) is

 80°
 30°
 60°
 45°

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

 inductance.
 capacitance.
 flux.
 voltage.

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Control Systems
A proportional plus integral controller

 it increases rise time
 both 2 and 3
 increases the stability of the system
 has high sensitivity

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Control Systems
In signal flow graph input node is node having only------------

 both 1 and 2.
None of these
 incoming branches.
 outgoing branches.

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Control Systems
Which of the following is the electrical analogous element for displacement in force-voltage analogy?

 Flux.
 Charge.
 Voltage.
 Current.

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

 M dx/dt
 any of the above
 M d2x/dt2
 M *x

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