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Control Systems

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

 L
 1/C
 R
 C

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Control Systems
The transfer function of the control system depends on

 initial conditions of input and output.
 the system parameters alone.
 nature of the input.
 nature of the output.

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Control Systems
The open loop transfer function of a unity feedback control system is given by G(s) = k/s(s+1). If gain k is increased to infinity, then damping ratio will tend to become

 infinite
 0.707
 unity
 zero

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

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

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Control Systems
To achieve the optimum transient response, the indicating instruments are so designed as to

 be undamped.
 provide damping which is slightly more than the critical value.
 be critically damped.
 provide damping which is slightly less than the critical value.

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Control Systems
If the magnitude of G(jω)H(jω) at phase crossover frequency is 0.5. Find the gain margin of the given system?

 4
 2
 1
 0.5

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