Uniform flow is said to occur when

Civil Engineering : Hydraulics - Quiz(MCQ)

size and shape of the cross-section change along a length

size and shape of the cross-section in a particular length remain constant

frictional loss in the particular length of the channel, will be less than the drop in elevation

frictional loss in the particular length of the channel will the more than the drop in its elevation

Correct Answer : size and shape of the cross-section in a particular length remain constant

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An orifice is taken as large if

(Hâ‚‚ - Hâ‚) > H

(Hâ‚‚ - Hâ‚) > H/2

(Hâ‚‚ - Hâ‚) > H/4

(Hâ‚‚ - Hâ‚) > H/3

Correct Answer : Option (D) : (Hâ‚‚ - Hâ‚) > H/3

A closed cylindrical vessel of 100 cm diameter and 200 cm high is completely filled with a liquid (sp. weight 1600 kg/m3) when rotated about its vertical axis at 100 r.p.m. The total pressure on its lid, is

459 kg

549 kg

945 kg

954 kg

Correct Answer : Option (D) : 954 kg

An error of 1% in measuring the head of water over the crest of a triangular notch, produces an error in the discharge which is equal to

1.5%

2.0%

2.5%

4.5%

Correct Answer : Option (C) : 2.5%

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