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Process Control and Instrumentation

Process Control and Instrumentation
Temperature measurement by optical pyrometer is done above __________ point, which is 1063°C.

Silver
Antimony
Gold
Nickel

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Process Control and Instrumentation
Range of hydrogen gas constant volume themometer is __________ °C.

100 - 500
400 - 1000
-10 to 20
0 to 100

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

Optical pyrometer
Thermocouples
Photoelectric pyrometer
Radiation pyrometer

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Process Control and Instrumentation
Which of the following can not measure a temperature of 1600°C ?

Thermocouple
Radiation pyrometer
Platinum resistance thermometer
Photo-electric pyrometer

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

Both B & C
Orificemeter
Kennison nozzle
Open weir

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