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Control Systems

Control Systems
what is the Laplace transform of a function δ(t-2)?

 2s
 e-2s
 0
 2

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Control Systems
Error at corner frequency ωcf of first order control system is -------

 ±2 db
 ±3 db
 ±1 db
 ±4 db

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Control Systems
For the polynomial , number of roots which lie in the right half of s-plane is

 4
 1
 3
 2

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Control Systems
The characteristic equation for closed loop system is given as . The value of k for which the system becomes just stable is

 4
 2
 8
 6

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Control Systems
The error of a system to a ramp input is 1/5, if the type of the system is decreased by one, then the error of unit step input is

 6/5
 0.167
 0.2
 5

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Control Systems
Electrical analogous quantity for dash-pot in force-current analogy is

 conductance.
 resistance.
 capacitance.
 inductance.

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