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Process Control and Instrumentation

Process Control and Instrumentation
Bourdon gauges are used for measuring pressure (kg/cm² )

< 2 (gauge)
< atmospheric
> 2 (gauge)
> 10 (absolute)

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Process Control and Instrumentation
Resistance of a gas in a vessel is given by (where, P = pressure, V = volume of the vessel, n = no. of moles of the gas, R = gas constant)

p/nRT
nRT/V
nRT/P
V/nRT

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Process Control and Instrumentation
Pressure of 0.01 psi (absolute) can be measured by __________ gauge.

Ionisation
Pirani
Mcloid
None of these

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Process Control and Instrumentation
Nickel percentage in invar which is an iron-nickel alloy, and is used as a thermocouple material is

68
36
54
12

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Process Control and Instrumentation
Which of the following fluid flow measuring devices can measure the largest flow rate?

Rotameter
V-notch
Weir
Orificemeter

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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
10
1
100

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