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Control Systems

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

 2
 8
 4
 6

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Control Systems
A transfer function has its zero in the right half of the s-plane. The function

 will give stable impulse response
 is positive real
 is non-minimum phase
 is minimum phase

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Control Systems
Find the corner frequency for the following transfer function? G(s) = 1/(s+2)

 4 rad/s
 1/2 rad/s
 2 rad/s
 1/4 rad/s

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

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

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Control Systems
Time constant is defined as the time taken by the response of the system to reach ----------- ?

 100% of the final value
 70.7% of the final value
 63% of the final value
 50% of the final value

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Control Systems
Find the stability for the following transfer function G(s) = 50/s(s+5) ?

 Stable
 Marginally stable
 Critically stable
 Unstable

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