Process Control and Instrumentation

Positioning controllers are used for _______________?

Byadmin March 5, 2019August 24, 2021

Positioning controllers are used for _______________?

A. Low loads
B. Temperature changes
C. High loads
D. Flow rate changes

Process Control and Instrumentation

In a closed loop system, the process to be controlled is an integrating process with transfer function 1/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit__________________?

In a closed loop system, the process to be controlled is an integrating process with transfer function 1/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit__________________?

A. Overdamped response
B. Underdamped response
C. Undamped response
D. Unstable response

Read More In a closed loop system, the process to be controlled is an integrating process with transfer function 1/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit__________________?
Process Control and Instrumentation

Silver point temperature is ______________ °C?

Silver point temperature is ______________ °C?

A. 760.5
B. 860.5
C. 960.5
D. 1060.5

Read More Silver point temperature is ______________ °C?
Process Control and Instrumentation

Measurement of pressure in ammonia reactor is done by __________________?

Measurement of pressure in ammonia reactor is done by __________________?

A. Bourdon gauge
B. U-tube manometer
C. Inclined tube manometer
D. Pirani gauge

Read More Measurement of pressure in ammonia reactor is done by __________________?
Process Control and Instrumentation

In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the _____________ variable?

In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the _____________ variable?

A. Load
B. Manipulated
C. Controlled
D. None of these

Read More In a shell and tube heat exchanger, the outlet temperature of heating/cooling fluid is the _____________ variable?
Process Control and Instrumentation

Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature ?

Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature ?

A. Platinum-platinum + rhodium
B. Iron-constantan
C. Chromel-constantan
D. All will give the same output

Read More Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature ?
Process Control and Instrumentation

Gas chromatography is used for the measurement of ________________?

Gas chromatography is used for the measurement of ________________?

A. Temperature
B. Pressure
C. Concentration
D. Flow rate

Read More Gas chromatography is used for the measurement of ________________?

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