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Process Control and Instrumentation

Process Control and Instrumentation
The __________ of a vapor pressure thermometer is a secondary element.

Bulb
Bourdon tube
None ofthese
Pointer

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Process Control and Instrumentation
The unit of 'time constant' of a system is the same as that of

Time
(time)⁻¹
None of these
Velocity

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Process Control and Instrumentation
For measuring the temperature of a red hot furnace, which is the most suitable instrument?

Bimetallic thermometer
Platinum resistance thermometer
Optical pyrometer
Thermocouple

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Process Control and Instrumentation
The function of a transducer is to

Modify the input signal
Convert the primary signal into a more useful quantity, usually an electric impulse
Codify/decodify the input signal
Amplify the input signal

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Process Control and Instrumentation
Which of the following thermocouples can measure the maximum temperature?

Iron-constantan
Chromel-alumel
Tungsten-molybdenum
Platinum-rhodium

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Process Control and Instrumentation
In Bode plot, Φ vs ω is plotted on a/an __________ graph paper.

Semi-log
Log-log
Triangular
Ordinary

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