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Process Control and Instrumentation

Process Control and Instrumentation
Specific conductance is defined as the reciprocal of resistance in ohms of 1c.c. of liquid at a specified temperature. Its value for distilled water is about __________ micro mho/cm³.

50
100
10
1

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Process Control and Instrumentation
Which of the following is a 'contact' pyrometer?

Radiation pyrometer
Infra red pyrometer
Optical pyrometer
Resistance pyrometer

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Process Control and Instrumentation
Which of the following thermocouples is incapable of measuring sub-zero (i.e., < 0°C) temperature?

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

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Process Control and Instrumentation
In a single tank system, the transfer function of level to inlet flow rate is

1/TS
R/(TS + 1)
L(TS + l)
R/TS

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Process Control and Instrumentation
The __________ of a vapor pressure thermometer is a primary element.

None of these
Pointer
Bulb
Bourdon tube

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Process Control and Instrumentation
Mercury thermometer can be used to measure the temperature upto __________ °C.

100
750
350
250

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