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Process Control and Instrumentation

Process Control and Instrumentation
The inverse Laplace transform of the function f(s) = 1/S(1 + S) is

1 + e-t
1 + et
1 - e-t
1 - et

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Process Control and Instrumentation
Liquid argon level in a pressurised storage tank (at 3 kg/cm² ) is measured by a/an

External float gage
None of these
Gage glass
Differential pressure gage

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Process Control and Instrumentation
Reference points i.e., ice point and steam point in Reaumer temperature scale are respectively

- 273° & 80°
32° & 460°
32° & 80°
0° & 80°

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Process Control and Instrumentation
Photoelectric pyrometers are suitable in the temperature range of __________ °C.

800-1600
800-2500
400-1000
400-1600

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Process Control and Instrumentation
Which of the following is not classified as a thermo electric pyrometer

Resistance thermometer
Optical pyrometer (disappearing filament type)
Thermocouple
Radiation pyrometer

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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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