Which of the following is not the triple point of water ?
A. 32°R
B. 273°K
C. 492°R
D. 32°F
Process Control and Instrumentation
Flow rate through an orifice is _____________ the pressure differential?
Flow rate through an orifice is _____________ the pressure differential?
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
What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system ?
What is the ratio of output amplitude to input amplitude for a sinusoidal forcing function in a first order system ?
A. 1
B. > 1
C. < 1
D. None of these
Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a __________________?
Continuous shell temperature measurement in a liquid-liquid heat exchanger is done by a __________________?
A. Thermocouple
B. Resistance thermometer
C. Mercury in glass thermometer
D. Vapor pressure thermometer
Time constant is the __________________?
Time constant is the __________________?
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
The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C?
The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C?
A. 250
B. 500
C. 750
D. 1000
A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same_________________?
A bimetallic thermometer as compared to industrial mercury in glass thermometer has almost the same_________________?
A. Temperature measuring range (- 40°C to 450°C)
B. Accuracy (± 1% of span)
C. Speed of response
D. All a, b & c
Operating range of a temperature measuring instrument is 800 to 1600°C. It could be a/an _____________ pyrometer?
Operating range of a temperature measuring instrument is 800 to 1600°C. It could be a/an _____________ pyrometer?
A. Radiation
B. Optical
C. Photoelectric
D. None of these
Positioning controllers are used for _______________?
Positioning controllers are used for _______________?
A. Low loads
B. Temperature changes
C. High loads
D. Flow rate changes
Reset rate is the another term used for ____________ time?
Reset rate is the another term used for ____________ time?
A. Dead
B. Integral
C. Derivative
D. None of these