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GATE 2019 Fluid Mechanics Day 10 Quiz

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Question 1

Most economical circular section is designed for

Question 2

Which of the following represents steady flow

Question 3

The head over a V-notch at the end of a channel is 75 cm. If an error of 0.15cm is possible in the measurement of the head, then the percentage error in computing the discharge is

Question 4

A 1 m wide rectangular channel carries a discharge of 2m3/s. The specific energy-depth diagram is prepared for the channel. It is observed in this diagram that corresponding to a particular specific energy; the subcritical depth is twice the supercritical depth. The subcritical depth (in meters, up to two decimal places) is equal to ______

Question 5

A 3m wide rectangular channel carries a flow of 6m3/s. The depth of flow at a section P is 0.5 m. A flat-topped hump is to be placed at the downstream of the section P. Assume negligible energy loss between section P and hump, and consider 'g' as 9.81 m/s2. The maximum height of the hump which will not change the depth of flow at section P is ____________mm.

Question 6

Direction: Each of the following items consists of two statements, one labelled as the ‘Statement (I)’ and the other as ‘Statement (II)’. Examine these two statements carefully and select the answers to these items using the codes below:
Statement (I): A moving hydraulic jump is called a surge.
Statement (II): The travel of a wave is faster in the upper portion than in the lower portion in case of positive surges.
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Dec 22ESE & GATE CE