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Control Systems

Control Systems
Advantages of open loop control system is/are

 reliable.
 simple and economical.
All of these
 accurate.

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

 2.
 1.
 0.
 3.

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Control Systems
The transfer function of a plant is T(s) = 5/(s+5)(s² + 5 + 1). The second order approximation of T(s) using dominant pole concept is

 5/(s+1)(s+5)
 5/(s² + 5 + 1)
 1/(s+1)(s+5)
 1/(s² + 5 + 1)

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Control Systems
Which of the following is the analogous quantity for mass element in force-voltage analogy?

All of these
 Inductance.
 Resistance.
 Capacitance.

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

 mass element
 spring element
All of these
 dash-pot

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Control Systems
A proportional plus integral controller

 it increases rise time
 both 2 and 3
 has high sensitivity
 increases the stability of the system

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