Question

In which of the following rain gauging methods are the values of rainfalls of all stations added?

(a) Arithmetic mean method

(b) Thiesson method

(c) Iso-hyetol method

(d) Recording type

The question was posed to me in an interview for internship.

My query is from Rainfall and its Measurement in portion Hydro Electric Power Plant of Energy Engineering

Answer 1

The correct answer is (a) Arithmetic mean method

To explain: In arithmetic mean method, the values of rainfalls of all the stations are added and the sum is divided by the number of gauging stations. This can be represented in the mathematical term as:

    ha = \(\frac{h1+h2…….hn}{n} = \frac{Ʃh}{n}\).