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Control Systems

Control Systems
If a circuit consists of two mass elements, two spring elements and four friction elements. Find the order of transfer function?

 12
 2
 4
 6

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Control Systems
The Laplace transformation of f(t) is F(S) given the final value of f(t) is

 Zero.
 One.
 Infinite.
 None of them.

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Control Systems
The impulse response of the system described by the differential equation will be

 (1/3) × (1-e-3t).
 e-3t u(t).
 1/3.
 e6t.

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Control Systems
The system is initially critical damped. If the gain of the system is doubled, then it will exhibit

 under damped characteristics.
 critical damped characteristics.
 over damped characteristics.
 undamped characteristics.

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Control Systems
A property of phase lead compensation is that the

 gain margin is reduced.
 bandwidth of closed loop system is reduced.
 rise time of closed loop system is reduced.
 overshoot is increased.

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

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

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