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Control Systems

Control Systems
Slope of asymptote in Bode plot of 2nd order system is _____________________ per octave.

 3 dB
 18 dB
 12 dB
 6 dB

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Control Systems
A box which tells the effect of inputs on control sub system is known as

 Logical box.
 Data Box.
 Decision box.
 State box.

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Control Systems
The initial slope of Bode plot for a transfer function having no poles at the origin is

 -20dB/decade.
 +10dB/decade.
 -10dB/decade.
 0 dB/decade

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Control Systems
Negative feedback in a closed loop control system

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

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Control Systems
The transfer function for tachometer E(S)/θ(S) is

 K/S
 K
 KS
 KS2

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Control Systems
Which of the following is/are the disadvantages of an open loop control system?

 Unreliable.
 both 1 and 2.
None of these
 Inaccurate.

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