Mining Engineering > GATE 2019 > Mine Surveying
The purpose of rotating a whirling hygrometer in hygrometric survey is to
A
wet the cotton wick with water thoroughly
B
maintain constant temperature of water in the container
C
create steady state evaporation of moisture from the wet bulb surface
D
prevent the heat produced by the cap lamp of the observer from affecting the readings

Correct : c

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Related Topics

whirling hygrometer hygrometric survey GATE Mining Engineering 2019 mining engineering exam wet bulb evaporation constant temperature water hygrometer readings observer heat effect

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