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Process Control and Instrumentation

Process Control and Instrumentation
Alphatron measures pressure __________ microns.

> 3
< 0.1
< 1
< 3

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Process Control and Instrumentation
__________ is an example of distributed parameter system

On-off controller
Tubular reactor
CSTR
None of these

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Process Control and Instrumentation
Thermal well made of __________ gives the fastest speed of response, while measuring temperature by thermocouples.

Inconel
Nichrome
Vycor (a glass)
Steel

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Process Control and Instrumentation
Which of the following filled system expansion thermometers has the lowest positive temperature measurement capability?

Alcohol in glass thermometer
Mercury in glass thermometer
Nitrogen in steel thermometer
Fused metal (Na or K) in steel thermometer

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Process Control and Instrumentation
Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a

Vapor pressure thermometer
Thermocouple
Reistance thermometer
Mercury in glass thermometer

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Process Control and Instrumentation
What is the Laplace transform of impulse input having magnitude 'X' ?

1
1/X
X²
X

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