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Process Control and Instrumentation

Process Control and Instrumentation
Phase lag of the sinusoidal response of a first order system is

30°
90°
120°
180°

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Process Control and Instrumentation
Starting temperature of optical radiation pyrometer is __________ °C.

1500
400
800
1200

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Process Control and Instrumentation
A control system has the following transfer function F(s) = (s - 1)(s + 1)/s(s - 2)(s + 4)The initial value of the corresponding time function is

-1
44020
1
43838

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Process Control and Instrumentation
In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the __________ variable.

Load
Controlled
Manipulated
None of these

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Process Control and Instrumentation
Response of a linear control system for a change in set point is called

Frequency response
Regulator problem
Servo problem
Transient response

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Process Control and Instrumentation
Bode diagram are generated from output response of the system subjected to which of the following input?

Impulse
Ramp
Step
Sinusoidal

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