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Control Systems

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

 3 dB
 6 dB
 18 dB
 12 dB

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Control Systems
The following transfer function represents a phase-lead compensator?

 (s+4)/(s+6)
 (4s+2)/(6s+1)
 (s+4)/(3s+6)
 1/s

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Control Systems
Certain control system has input u(t) and output c(t). If the input is first passed through a block having transfer function e-s and unit gain is applied to the applied to the system. The modified output will be

 c(t).u(t-1)
 c(t)u(t)
 c(t-1).u(t)
 c(t-1).u(t-1)

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Control Systems
Find the Laplace transform for sinωt?

 s/(s²+ω²)
 1/s²
 1/s
 ω/(s²+ω²)

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Control Systems
Which of the following is/are the example of actuator?

 All
 Hydraulic motor
 Pneumatic motor
 Electric motor

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Control Systems
What is the open loop DC gain of a unity feedback control system having closed loop transfer function as

 9/4
 4/13
 4/9
 13/4

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