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Control Systems

Control Systems
For a unity feedback control system open loop transfer function then velocity error constant is

 infinity.
 0.
 50.
 10.

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Control Systems
Advantages of open loop control system is/are

 reliable.
All of these
 accurate.
 simple and economical.

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Control Systems
The compensator would provide a maximum phase shift of

 45o.
 20o.
 60o.
 30o.

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Control Systems
A function y (t) satisfies the following differential equation : Where, δ (t) is the delta function. Assuming zero initial condition and denoting the unit step function by u(t), y(t) can be formed as

 e-t.
 etu(t).
 et.
 e-tu(t).

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Control Systems
Transfer function of a control system depends on

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

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Control Systems
By using which of the following elements, mechanical translational systems are obtained?

All of these
 spring element
 dash-pot
 mass element

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