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AE-JE Foundation CE: Fluid Mechanics Quiz 8

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Question 1

A 1.2 m wide rectangular channel of bed slope 0.0004 and manning’s coefficient 0.01, carrying the discharge of 0.5 m³/s. The normal depth of the channel is __________.

Question 2

The hydraulic radius and cross-sectional area of a channel is given by 4.5 m and 18.5 sq.m respectively. What is the wetted perimeter (m) of channel?

Question 3

In a triangular channel, find the minimum specific energy of flow if its critical depth is 1.2 m

Question 4

What is the specific energy (m-kg/kg) for 1 m depth of flow having velocity of 3 m/s?

Question 5

The flow depth to bottom width ratio for a most economical rectangular channel is

Question 6

The specific energy in an open channel is

Question 7

Vertical distribution of velocity in an open channel for laminar flow can be assumed as

Question 8

The phenomenon occurring in an open channel when a rapidly flowing stream abruptly changes to slowly flowing stream causing a distinct rise of liquid surface, is

Question 9

The flow at critical depth in an open channel is __________.

Question 10

The hydraulic radius in the case of an open channel with great width is equal to

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