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Process Control and Instrumentation

Process Control and Instrumentation
Out of the following themocouple wire insulating material, the highest temperature rating is for

Ceramic fibre
Fibre glass
Teflon
Asbestos

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Process Control and Instrumentation
Thermal conductivity measurement com-prises the working principle of a

CO₂ analyser
Spectrometer
Chromatograph
Polarimeter

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Process Control and Instrumentation
The initial value (t=0) of the unit step response of the transfer function [(s + 1)/(2s + 1)] is

1
43832
2

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Process Control and Instrumentation
Which of the following is not a differential pressure flow meter?

Venturimeter
Rotameter
Flow nozzle
Orificemeter

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Process Control and Instrumentation
The transfer function of a process is 1/(16s² + 8s + 4). If a step change is introduced into the system, then the response will be

Over damped
Critically damped
Under damped
None of these

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Process Control and Instrumentation
Which of the following is not a variable area flow meter?

Orifice and tapered plug meter
Rotameter
Magnetic flow meter
Piston type meter

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