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Control Systems

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

 1
 3
 4
 2

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Control Systems
The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its closed loop transfer function is

 (2s+1)/s²
 (2s+2)/s²
 (2s+1)/(s+1)²
 (2s+2)/(s+1)²

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Control Systems
A second order under damped system has damping ratio of 0.3. Find the phase margin of the system?

 30°
 60°
 20°
 3°

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Control Systems
Time taken for the response to rise from zero to 100 % for very first time is called

 Peak time.
 Delay time.
 Rise time.
 Settling time.

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Control Systems
The impulse response of the system described by the differential equation will be

 e-3t u(t).
 e6t.
 1/3.
 (1/3) × (1-e-3t).

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Control Systems
The transfer function of the control system depends on

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

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