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Control Systems

Control Systems
Given the Laplace transform of f(t) = F(s), the Laplace transform of (f(t)e-at) is equal to

 F(s)/(s+a)
 e-as*F(s)
 eas*F(s)
 F(s+a)

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Control Systems
Angle of asymptotes for complimentary root locus is

 (2q+1)*180/P
 (2q+1)*180/(P-Z)
 (2q)*180/P
 (2q)*180/(P-Z)

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Control Systems
The compensator would provide a maximum phase shift of

 30o.
 45o.
 20o.
 60o.

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Control Systems
Force balancing equation for elastic element (K) is (where, x = displacement)

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

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Control Systems
The characteristic equation of a feedback control is 2s4 + s3 + 3s2 + 5s + 10 = 0. The no of roots in the right half of the s-plane is

 3.
 4.
 0.
 2.

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Control Systems
Which system is also known as automatic control system?

 Closed loop control system
 Open loop control system
 Nether 1 nor 2
 Either 1 or 2

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