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Control Systems

Control Systems
Advantages of open loop control system is/are

 reliable.
 simple and economical.
 accurate.
All of these

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Control Systems
If a circuit consists of two mass elements, two spring elements and four friction elements. Find the order of transfer function?

 2
 4
 12
 6

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Control Systems
Find the type of the system given by

 4.
 2.
 1.
 3.

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Control Systems
A unity feedback control system has forward loop transfer function as e-Ts/s(s+1). Its phase value will be zero at frequency ω1. Which of the following equations should be satisfied by ω1?

 Tω1 = cot(ω1)
 Tω1 = tan(ω1)
 ω1 = tan(Tω1)
 ω1 = cot(Tω1)

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Control Systems
What is the open loop DC gain of a unity feedback control system having closed loop transfer function as

 4/9
 13/4
 4/13
 9/4

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Control Systems
A control system has open loop transfer function . Break away point is lies between

 -4 and -6.
 0 and 4.
 0 and -4.
 any of the above.

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