SSC JE Civil Engineering 2018 Set 5 Solved Paper

Question : 139 of 200

Marks: +1, -0

Which of the following represents the critical velocity for the discharge per unit width of qm

^{3}

/s/m from the wide rectangular channel?

Solution:

Critical depth of rectangular channel

yc=(q^2/g)^{1/3}

q = Discharge per unit width
g = gravitational acceleration

E_\min=3/2yc

E_\min

= Minimum specific energy

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