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How many methods are used to determine the average rainfall depending upon area of basin in rain gauging?(a) 2(b) 3(c) 4(d) 5I have been asked this question in an online interview.The doubt is from Rainfall and its Measurement in section Hydro Electric Power Plant of Energy Engineering

Answer»

Right choice is (b) 3

Easiest explanation: When there are more basins, three of the following METHODS are used to determine the AVERAGE of rainfall depending upon the area of basin. They are Arithmetic mean METHOD, THIESSON method and iso-hyetol method.



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