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Control Systems

Control Systems
A control system has open loop transfer function G(s) = k/(s(s + 2). Find the break away point?

 -2
 -1
 1
 2

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Control Systems
The transfer function of the control system depends on

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

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Control Systems
First Foster form of a LC network represents which element in the beginning?

 Resistor.
 Both A and B.
 Capacitor.
 Inductor.

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Control Systems
The open loop transfer function of a unity feedback control system is given by G(s) = k/s(s+1). If gain k is increased to infinity, then damping ratio will tend to become

 unity
 zero
 0.707
 infinite

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

 Critically stable
 Marginally stable
 Unstable
 Stable

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

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

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