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Control Systems

Control Systems
Which of the following is/are the example of actuator?

 Pneumatic motor
 Electric motor
 All
 Hydraulic motor

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Control Systems
The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its closed loop transfer function is

 (2s+2)/(s+1)²
 (2s+1)/(s+1)²
 (2s+2)/s²
 (2s+1)/s²

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Control Systems
The transfer function of a system given by The system is

 a critically damped.
 an under damped.
 unstable.
 an over damped.

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Control Systems
The system having characteristic equation is used to be an oscillator. What is the value of k?

 3
 1
 4
 2

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Control Systems
Transfer function of a control system depends on

 system parameters alone.
 initial conditions of input and output.
 nature of output.
 nature of input.

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Control Systems
The characteristic equation of a feedback control system is given by s³ + 5s² + (k + 6)s + k = 0. In the root loci diagram, the asymptotes of the root loci for large 'k' meet at a point in the s-plane whose coordinates are

 (2,0)
 (-2,0)
 (1,0)
 (-1,0)

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