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Control Systems

Control Systems
A open loop transfer function is given as G(s) = (s+2)/(s+1)(s-1). Find the number of encirclements about '-1+j0'?

 1
 2
 0
 3

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Control Systems
Lowest critical frequency is due to zero and it may be present at the origin or nearer to the origin, then the type of network is

 LC circuit.
 RLC circuit.
 RC circuit.
 RL Circuit.

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Control Systems
The closed loop transfer function of a unity feedback control system is 9/(s² + 3s + 9), then the type of the system is

 0
 2
 1
 3

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Control Systems
Which of the following statement is/are true statements?

All of these
 Type of the system is obtained from open loop transfer function
 Transient state analysis depends on order of the system
 The steady state analysis depends on type of the system

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

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

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Control Systems
Given the Laplace transform of f(t) = F(s), the Laplace transform of (f(t)e-at) is equal to

 eas*F(s)
 F(s)/(s+a)
 e-as*F(s)
 F(s+a)

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