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Control Systems

Control Systems
Find the bandwidth of the system, when rise time of the system is give as 1msec?

 500 Hz
 750 Hz
 1 kHz
 350 Hz

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Control Systems
A system has poles at 0.01 Hz, 1 Hz and 80 Hz; zeros at 5 Hz, 100 Hz and 200 Hz. The approximate phase of the system response at 20 Hz is

 -180°
 90°
 180°
 -90°

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Control Systems
Advantages of open loop control system is/are

 accurate.
 reliable.
All of these
 simple and economical.

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Control Systems
Let P = Number of open loop poles and Z = Number of open loop zeros and P > Z, find the number of branches terminating at ∞?

 P - Z
 Z
 P
 Any of the above

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Control Systems
A second order control system has F(jω) = 100/(100 - ω² + 10√2 jω). Find the resonant peak?

 1.5
 0.5
 0.707
 1

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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)/(s+1)²
 (2s+2)/s²
 (2s+1)/(s+1)²

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