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Control Systems

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

 750 Hz
 1 kHz
 350 Hz
 500 Hz

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Control Systems
The amplitude spectrum of a Gaussian pulse is

 Uniform.
 Gaussian.
 A sine function.
 Impulse function.

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Control Systems
Number of sign changes in the entries in 1st column of Routh array denotes the no. of

 open loop poles in RHP.
 roots of characteristic polynomial in RHP.
 zeroes of system in RHP.
 open loop zeroes in RHP.

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Control Systems
If two blocks having gains A and B respectively are in series connection, find the resultant gain using block diagram reduction technique?

 A/B
 A+B
 A*B
 A-B

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Control Systems
Negative feedback in a closed loop control system

 reduces gain.
 reduces sensitivity to parameter variation.
 improves disturbance rejection.
All of these

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Control Systems
The characteristic equation of a control system is given below: The system is

 marginally stable
 unstable
 critical stable
 stable

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