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Process Control and Instrumentation

Process Control and Instrumentation
Pressure of 0.0001 absolute psi can be measured by __________ gauge

Mcloid
Pirani
None of these
Thermocouple

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Process Control and Instrumentation
Thermal conductivity measurement is used for the determination of

CO₂ percentage in the flue gas
O₂ percentage in the flue gas
Composition of an alloy
Specific gravity of petrofuels

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Process Control and Instrumentation
Bode diagram are generated from output response of the system subjected to which of the following input?

Step
Ramp
Sinusoidal
Impulse

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Process Control and Instrumentation
Which of the following filled system expansion thermometers has the lowest positive temperature measurement capability?

Fused metal (Na or K) in steel thermometer
Mercury in glass thermometer
Nitrogen in steel thermometer
Alcohol in glass thermometer

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Process Control and Instrumentation
Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their

Low thermal conductivity
Low flash point
High viscosity index
Low electrical conductivity

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

Bourdon gauge
Inclined tube manometer
U-tube manometer
Pirani guage

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