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Process Control and Instrumentation

Process Control and Instrumentation
The temperature range for which copper resistance thermometer can be used is __________ °C

350 to 750
500 to 900
0 to 150
-200 to 150

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Process Control and Instrumentation
Which of the following is not a variable area flow meter?

Orifice and tapered plug meter
Rotameter
Magnetic flow meter
Piston type meter

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Process Control and Instrumentation
Thermistors are used in __________ devices.

Temperature measuring
Voltage measuring
Both B & C
Temperature compensating

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Process Control and Instrumentation
0n-off control which is a special case of proportional control, has a band width of about __________ percent.

75
100
25

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Process Control and Instrumentation
Which is the most suitable instrument for measuring pressure below 3 microns?

Alphatron
Mcleoid gauge
Bourdon guage
Ionisation gauge

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Process Control and Instrumentation
Continuous flue gas analyser makes use of paramagnetic properties of some of its constituents, which move towards the strongest part of the magnetic field thus displacing diamagnetic gases. Which of the following gases is diamagnetic?

CO₂
O₂
NO₂
NO

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