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Control Systems

Control Systems
The open loop transfer function of non unity negative feedback system is , then the number of root locus branches equal to

 3.
 1.
 0.
 2.

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Control Systems
When writing a transfer function which of the following loops are not valid loops?

 Self loops at output node.
 Self loops at input node.
 Both 1 and 2.
 Neither 1 nor 2.

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Control Systems
Time taken by the response to reach and stay within a specified error is called

 Peak time.
 Peak overshoot.
 Raise time.
 Settling time.

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

 50.
 20.
 0.
 infinity.

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Control Systems
The transfer function of the system described by d²/dt²(y(t)) + 3d/dt(y(t)) + 2y(t) = 5u(t) with u(t) as input and y(t) as output is

 s(s²+3s+2)/5
 5/s(s²+3s+2)
 5/(s²+3s+2)
 (s²+3s+2)/5

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Control Systems
A box which tells the effect of inputs on control sub system is known as

 Logical box.
 Data Box.
 Decision box.
 State box.

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