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.Management Sciences
Category: Process Control and Instrumentation
Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their ?
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A. Low thermal conductivity
B. Low electrical conductivity
C. High viscosity index
D. Low flash point
A simple pitot tube measures the___________________?
A. Average velocity
B. Maximum velocity
C. Point velocity
D. Static pressure
The amplitude ratio for the sinusoidal response of __________ is < 1?
A. Transportation lag
B. First order system
C. Second order system
D. None of these
Photoelectric pyrometers are suitable in the temperature range of ________________ °C?
A. 400-1600
B. 800-1600
C. 800-2500
D. 400-1000
Zirconia probe is used for the measurement of___________________?
A. Humidity of air
B. % CO2 in flue gas
C. % O2 in flue gas
D. Speed of a submarine
Hot wire anemometer is used for the measurement of___________________?
A. Flow rates of fluids
B. Flow rates of granular solids
C. Very high temperature
D. Thermal conductivity of gases
Thermal conductivity cell is the primary element of a/an _____________ analyser?
A. Oxygen
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
Composition of natural gas is determined by the_________________?
A. Haldane apparatus
B. Mass spectrometer
C. Chromatograph
D. Both B. and C.
In a feed-back control system G and H denote open loop and close loop transfer functions respectively. The output-input relationship is_____________?
A. G/(1 + H)
B. H/(1 + G)
C. G/H
D. H/G
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