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Control Systems

Control Systems
Force balancing equation of a dash-pot element is (where, x = displacement)

None of these
 B d2x/dt2
 B dx/dt
 B *x

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Control Systems
Consider a network function H(s) = 2(s+3)/{(s+2)(s+4)}. What is the steady state response due to step input?

 4/3
 1
 3/4
 1/2

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Control Systems
When the input to a system was with drawn at t = 0, its output was found to decrease exponentially from 1000 units to 500 units in 1.386 sec. The time constant of the system is

 0.693.
 0.500.
 2.000.
 1.386.

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Control Systems
In which of the following controller band width is increased?

 nether 1 nor 2
 proportional plus integral controller
 proportional plus derivative controller
 both 1 and 2

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Control Systems
Differentiation of parabolic response is a -------------- response?

 impulse
 ramp
 parabolic
 step

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Control Systems
Two identical first order systems have been cascaded non interactively. The unit step response of the systems will be

 critical damped
 Over damped
 un damped
 under damped

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