Related Questions

Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the mixture. Dryness factor of steam is measured by a __________ calorimeter.
A Bomb
B Throttling
C Junker's
D Boy's
__________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very low.
A Bucket
B Throttling
C Separating
D A combination of separating & throttling
The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to
A Minimise its corrosion
B Avoid radiation heat loss
C Make it look attractive
D None of these
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called
A Humidity ratio
B Relative humidity
C Absolute humidity
D Degree of saturation
The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.
A 0
B 100
C 50
D None of these
The effect of friction in the nozzle __________ dryness fraction of steam.
A Has no effect on
B Decreases
C Increases
D None of these
If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by
A Throttling calorimeter
B Separating calorimeter
C Combined separating and throttling calorimeter
D Bucket calorimeter
Dryness fraction of dry steam is
A 0
B $$\infty $$
C 1
D 0.5
In vapour compression cycle, the condition of refrigerant is very wet vapour
A After passing through the condenser
B Before passing through the condenser
C After passing through the expansion or throttle valve
D Before entering the compressor
The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called
A Humidity ratio
B Relative humidity
C Absolute humidity
D Degree of saturation

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