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Process Control and Instrumentation

Process Control and Instrumentation
Continuous measurement of specific gravity of a liquid is done by

Both A and C
Displacement meter
Contact-type electric indicators
Hydrometer

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Process Control and Instrumentation
Measurement of pressure in ammonia reactor is done by

Bourdon gauge
Pirani guage
Inclined tube manometer
U-tube manometer

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Process Control and Instrumentation
Compositional analysis of flue gas coming out of a furnace in respect of O₂ and CO₂% can be continuously done by a/an

Chromatograph
Zirconia probe
Orsat apparatus
Thermal conductivity cell

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Process Control and Instrumentation
Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in __________ in the electrical resistance of the wire.

Decrease
Exponential decrease
Increase
No change

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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
100
10
1

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Process Control and Instrumentation
Which of the following is not a composition measuring instrument?

Mass spectrometer
Hot wire anemometer
Polarograph
Thermal conductivity cell

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