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Control Systems

Control Systems
If a body has identical properties all over, it is known as

 isotropic.
 none of them.
 elastic.
 homogeneous.

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Control Systems
The impulse response of an initally relaxed linear system is e-2tu(t). To produce a response of te-2tu(t), the input must be equal to

 e-2tu(t).
 (0.5)e-2tu(t).
 2e-tu(t).
 e-tu(t).

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Control Systems
Which of the following is/are the advantages of a closed loop control system?

 nether 1 nor 2.
 The closed loop systems are less affected by noise.
 The closed loop systems are accurate.
 both 1 and 2.

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Control Systems
A system is stable for (where GM = Gain Margin and PM = Phase Margin):

 GM and PM both +ve.
 PM - ve.
 GM and PM both -ve.
 GM -ve.

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Control Systems
The following transfer function represents a phase-lead compensator?

 (s+4)/(s+6)
 (s+4)/(3s+6)
 (4s+2)/(6s+1)
 1/s

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Control Systems
Error constants of a system are a measure of

 steady state response as well as transient state response.
 steady state response.
 relative stability.
 transient state response.

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