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Process Control and Instrumentation

Process Control and Instrumentation
What is the normal percentage of rhodium in platinum + rhodium element used in the thermocouple?

13
3
0.1
29

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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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Process Control and Instrumentation
Out of the following temperature measuring instruments, the measurement accuracy will be minimum for the

Iron-constantan thermocouple
Mercury in glass thermometer
Optical pyrometer
Alcohol filled thermometer

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Process Control and Instrumentation
Which is the most suitable instrument for measuring pressure below 3 microns?

Alphatron
Mcleoid gauge
Ionisation gauge
Bourdon guage

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Process Control and Instrumentation
The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C.

1000
500
250
750

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Process Control and Instrumentation
Zirconia probe is used for the measurement of

% O₂ in flue gas
Speed of a submarine
Humidity of air
% CO₂ in flue gas

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