M

Mr. Dubey • 52.30K Points
Coach

Q. The exit diameter for a simple elbow draft tube should be 

(A) large
(B) small
(C) very small
(D) same
Correct : Option (A)

Explanation:
 the exit diameter for a simple elbow draft tube should be large as possible. it helps to cut down the cutdown the cost and recover the kinetic energy at the outlet of runner. the simple elbow draft tube is placed close to the tail race.

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