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Process Control and Instrumentation

Process Control and Instrumentation
Nitrogen gas constant volume thermometer is suitable for measuring a temperature of __________ °C.

> 50
0-100
> 100
< 0

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Process Control and Instrumentation
The amplitude ratio for the sinusoidal response of a __________ is 1.

Transportation lag
Second order system
None of these
First order system

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Process Control and Instrumentation
The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple.

Iron-constantan
Chromel-alumel
None of these
Platinum-platinum/rhodium

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Process Control and Instrumentation
Emf developed by a thermocouple while measuring a temperature of 400°C is 22 mV. The type of thermocouple used is

Platinum-platinum+rhyodium
Chromel-alumel
Platinum-rhodium
Iron-constantan

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Process Control and Instrumentation
Working principle of radiation pyrometer is based on the

Kirchoffs law
Stafan-Boltzman law
Seebeck effect
Wien's law

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Process Control and Instrumentation
A non-linear system will have __________ steady state values.

One
Two
More than one
Three

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