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Process Control and Instrumentation

Process Control and Instrumentation
Which is the strongest paramagnetic gas?

NO₂
NO
O₂
CO₂

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Process Control and Instrumentation
A mercury barometer measures the __________ pressure.

Vacuum
Absolute
Gauge
Atmospheric

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Process Control and Instrumentation
A sinusoidal variation in the input passing through a linear first order system

Gets amplified (magnitude increases)
Gets attenuated (magnitude decreases)
Becomes more oscillatory (frequency increases)
Becomes less oscillatory (frequency decreases)

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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
None of these
Aluminium-chromel

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Process Control and Instrumentation
Strain gage pressure transducers are used to measure __________ pressures.

Both A & B Here
Neither A nor B
Absolute as well as differential
Gage as well as vacuum

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

Orificemeter
Both B & C
Open weir
Kennison nozzle

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