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Control Systems

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

 Pneumatic motor
 Hydraulic motor
 Electric motor
 All

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Control Systems
The compensator would provide a maximum phase shift of

 20o.
 30o.
 60o.
 45o.

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

 2
 3
 1
 4

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

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Control Systems
Two identical first order systems have been cascaded non interactively. The unit step response of the systems will be

 under damped
 Over damped
 un damped
 critical damped

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Control Systems
Transfer function of zero order hold response is

 (1 / s) × (1 - est).
 (1 / s) × (1 - e-st).
 (1 / s) × e-st.
 (s) × (1 - est).

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