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Process Control and Instrumentation

Process Control and Instrumentation
Continuous measurement of moisture in paper is done by

Hair-hygrometer
Weighing
Sling psychrometer
High resistance Wheatstone's bridge circuit

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Process Control and Instrumentation
Process degree of freedom indicates __________ number of controllers to be used.

Nothing about the
The minimum
Both maximum and the minimum
The maximum

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Process Control and Instrumentation
Continuous measurement of specific gravity of a liquid is done by

Displacement meter
Hydrometer
Contact-type electric indicators
Both A and C

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Process Control and Instrumentation
Thermistors are made of

Iron-copper alloys
Ultra pure metals
Nickel-chromium alloys
Metal oxides

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Process Control and Instrumentation
Silver point temperature is __________ °C.

760.5
1060.5
960.5
860.5

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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.

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

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