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Process Control and Instrumentation

Process Control and Instrumentation
Operating range of a temperature measuring instrument is 800 to 1600°C. It could be a/an __________ pyrometer.

None of these
Optical
Radiation
Photoelectric

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Process Control and Instrumentation
Flow rate of sludge is not measured by a/an

Kennison nozzle
Open weir
Both B & C
Orificemeter

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Process Control and Instrumentation
Load cells are used for the measurement of

Strain
Velocity
Weight
Stress

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Process Control and Instrumentation
According to Bode stability criterian, a system is unstable, if the open loop frequency response exhibits an amplitude ratio exceeding unity at frequency for which phase lag is

45°
90°
180°
0°

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Process Control and Instrumentation
Out of the following themocouple wire insulating material, the highest temperature rating is for

Asbestos
Ceramic fibre
Teflon
Fibre glass

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Process Control and Instrumentation
Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere?

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

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