Which of the following is not the triple point of water ?
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
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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