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Control Systems

Control Systems
Advantages of open loop control system is/are

 reliable.
 accurate.
 simple and economical.
All of these

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Control Systems
If the transfer function of a phase lead compensator is (s+a)/(s+b) and that of a lag compensator is (s+p)/(s+q), then which one of the following sets of conditions must be satisfied?

 a < b, p < q
 a > b, p < q
 a < b, p >q
 a > b, p > q

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Control Systems
The device necessarily used for automatic temperature control in a furnace is

 Any of above.
 Auto-transformer.
 Thermostat.
 Thermocouple.

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Control Systems
The input-output relationship of a linear time invariant continuous time system is given by r(t) = d²c(t)/dt² + 3 dc(t)/dt + 2 c(t) Where r(t) and c(t) are input and output respectively. What is the transfer function of the system equal to?

 1/(s² + s + 2)
 1/(s² + 3s + 2)
 2/(s² + s + 2)
 2/(s² + 3s + 2)

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

 Electric motor
 Hydraulic motor
 Pneumatic motor
 All

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Control Systems
In signal flow graph input node is node having only------------

None of these
 outgoing branches.
 both 1 and 2.
 incoming branches.

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