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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) ?

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) ?

A. V/nRT
B. nRT/V
C. nRT/P
D. P/nRT

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) ? Read More »

Process Control and Instrumentation

Degree to which an instrument indicates the changes in measured variable without dynamic error is called its ___________________?

Process Control and Instrumentation /
Degree to which an instrument indicates the changes in measured variable without dynamic error is called its ___________________?

A. Speed of response
B. Reproducibility
C. Fidelity
D. Static characteristics

Degree to which an instrument indicates the changes in measured variable without dynamic error is called its ___________________? Read More »

Process Control and Instrumentation

Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere ?

Process Control and Instrumentation /
Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere ?

A. Platinum-platinum + rhodium
B. Iron-constantan
C. Copper-constantan
D. Chromel-alumel

Which of the following thermocouples is the most suitable for measuring a temperature of about 1600°C in an oxidizing atmosphere ? Read More »

Process Control and Instrumentation

Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity ?

Process Control and Instrumentation /
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity ?

A. CO2
B. N2
C. O2
D. CO

Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity ? Read More »

Process Control and Instrumentation