A. Humidity of air
B. % CO2 in flue gas
C. % O2 in flue gas
D. Speed of a submarine
Related Mcqs:
- Zirconia probe is used for the continuous measurement of ______________ flue gases going out of the furnace?
A. Oxygen in
B. Carbon dioxide in
C. Carbon monoxide in
D. Temperature of - 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 - The unit of ‘time constant’ of a system is the same as that of___________________?
A. Velocity
B. Time
C. (Time)-1
D. None of these - A photo electric device in which the resistance of the metal is directly proportional to the light striking on it, is known as photo-conductive cell. Photoelectric transducers are used for the measurement of those parameters, which can be used to produce variation in_______________?
A. Light intensity
B. Current
C. Flux density
D. Voltage - 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 - Thermal conductivity measurement com-prises the working principle of a_________________?
A. CO2 analyser
B. Polarimeter
C. Spectrometer
D. Chromatograph - Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their ?
A. Low thermal conductivity
B. Low electrical conductivity
C. High viscosity index
D. Low flash point - Thermal wells are used in the temperature measurement to____________________?
A. Guard against corrosive and oxidising action on thermocouple materials
B. Reduce measuring lag
C. Increase the fidelity
D. Increase the sensitivity - Mercury thermometer is commonly used for low temperature measurement. The freezing point and boiling point of mercury are respectively _____________ °C?
A. – 39 and 350
B. – 51 and 439
C. – 79 and 395
D. – 10 and 425 - Which of the following filled system expansion thermometers has the lowest positive temperature measurement capability ?
A. Mercury in glass thermometer
B. Alcohol in glass thermometer
C. Fused metal (Na or K) in steel thermometer
D. Nitrogen in steel thermometer
