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A siphon spillway in a concrete gravity dam is in the shape of ________________

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+1 vote
in Irrigation Engineering by (75.2k points)
A siphon spillway in a concrete gravity dam is in the shape of ________________

(a) U-shape

(b) Inverted U-shape

(c) Horizontal bend through the abutment

(d) Any straight line

I got this question in a job interview.

My enquiry is from Shaft Spillway in portion Spillways, Energy Dissipators and Spillway Gates of Irrigation Engineering

1 Answer

0 votes
by (106k points)
Right choice is (b) Inverted U-shape

Explanation: A siphon spillway is a closed conduit of the shape of an inverted U-tube with unequal legs and works on the principle of siphonic action. It consists of a siphon pipe one end of which is in u/s side and the other end discharges water on the d/s side.

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