A. 32°R
B. 273°K
C. 492°R
D. 32°F
Which of the following is not the triple point of water ? Read More »
Process Control and Instrumentation A. Proportional to
B. Inversely proportional to the square root of
C. Proportional to the square root of
D. Inversely proportional to the square of
Flow rate through an orifice is _____________ the pressure differential? Read More »
Process Control and Instrumentation A. 1
B. > 1
C. < 1
D. None of these
A. Thermocouple
B. Resistance thermometer
C. Mercury in glass thermometer
D. Vapor pressure thermometer
A. Time taken by the controlled variable to reach 63.2% of its full change
B. Same as transportation lag
C. Same as dead time
D. Time required by the measured variable to reach 63.2% of its ultimate change
Time constant is the __________________? Read More »
Process Control and Instrumentation A. 250
B. 500
C. 750
D. 1000
A. Temperature measuring range (- 40°C to 450°C)
B. Accuracy (± 1% of span)
C. Speed of response
D. All a, b & c
A. Radiation
B. Optical
C. Photoelectric
D. None of these
A. Low loads
B. Temperature changes
C. High loads
D. Flow rate changes
Positioning controllers are used for _______________? Read More »
Process Control and Instrumentation A. Dead
B. Integral
C. Derivative
D. None of these
Reset rate is the another term used for ____________ time? Read More »
Process Control and Instrumentation