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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
 4
 6
 8

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Control Systems
A linear time invariant system has an impulse response e2t for t > 0 . If initial condition are 0 and input is e3t, the output for t > 0 is

  e3t - e2t.
  e5t.
  e2t + e3t.
  e2t - e3t.

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Control Systems
A function y (t) satisfies the following differential equation : Where, δ (t) is the delta function. Assuming zero initial condition and denoting the unit step function by u(t), y(t) can be formed as

 e-tu(t).
 e-t.
 et.
 etu(t).

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Control Systems
What is the order of a closed loop control system for a plant with a transfer function equal to G(s) = k/s²(1+Ts) and with unity feedback

 2
 1
 0
 3

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Control Systems
Resonant peak of a marginally stable system is

 any of the above
 finite value
 0
 infinite

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Control Systems
Transfer function of a control system depends on

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

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