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Process Control and Instrumentation

Process Control and Instrumentation
The level of a liquid under pressure can be determined using

Bubbler system
Diaphragm box system
Differential pressure manometer
Air-trap system

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Process Control and Instrumentation
Use of I-control along with P-control facilitates

None of these
Elimination of offset
Reduction of stability time
Reduction of offset

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Process Control and Instrumentation
Which of the following is not classified as a thermo electric pyrometer

Optical pyrometer (disappearing filament type)
Radiation pyrometer
Thermocouple
Resistance thermometer

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Process Control and Instrumentation
Which of the following is not suitable for measuring the temperature of a red hot object in the range of 800 - 1600°C?

Photoelectric pyrometer
Optical pyrometer
Thermocouples
Radiation pyrometer

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Process Control and Instrumentation
A manometer measures the __________ pressure.

Atmospheric
Absolute
None of these
Gauge

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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
Platinum-rhodium
Chromel-alumel
Iron-constantan

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