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Control Systems

Control Systems
The unit step response of the system is 1 - e-t(1+t). Which is the system?

 stable
 critically stable
 oscillatory
 unstable

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

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

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Control Systems
Electrical analogous quantity for dash-pot in force-current analogy is

 inductance.
 conductance.
 capacitance.
 resistance.

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Control Systems
Resonant peak of a marginally stable system is

 0
 any of the above
 finite value
 infinite

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Control Systems
For the polynomial , number of roots which lie in the right half of s-plane is

 1
 4
 3
 2

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

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

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