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What are the dimensions of the standard class-A pan?

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+1 vote
in Irrigation Engineering by (75.2k points)
What are the dimensions of the standard class-A pan?

(a) Diameter-1.2 m, Depth – 25 cm

(b) Diameter-2 m, Depth – 25 cm

(c) Diameter-2 m, Depth – 30 cm

(d) Diameter-1.2 m, Depth – 30 cm

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

I would like to ask this question from Water Requirements of Crops in division Water Requirements of Crops of Irrigation Engineering

1 Answer

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by (106k points)
Right choice is (a) Diameter-1.2 m, Depth – 25 cm

Easiest explanation: Class-A pan is used for experimental determination of pan evaporation. This pan has a diameter of 1.2 m, 25 cm deep, and the bottom is raised 15 cm above the ground surface.

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