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Process Control and Instrumentation

Process Control and Instrumentation
Liquid levels in autocalves are measued by

Glass gauge
Simple float
None of these
Differential float type manometer

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Process Control and Instrumentation
Which thermocouple can be used to measure a temperature of around 1400°C ?

Copper-constantan
Platinum-platinum+rhodium
Aluminium-chromel
None of these

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

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

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Process Control and Instrumentation
Reset rate is the another term used for __________ time.

Derivative
None of these
Integral
Dead

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Process Control and Instrumentation
Cascade control means

One feed-back loop
More than one feed-back loop
Feed forward control
On-off control

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Process Control and Instrumentation
Which of the following thermocouples has the widest temperature measurement range?

Chromel-alumel
Platinum-platinum/rhodium
Iron-constantan
Copper-constantan

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