This set of Fluid Mechanics Multiple Choice Questions & Answers (MCQs) focuses on “Critical Flow in Different Channel Sections – 1”.

1. What is the condition for critical flow?

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2. What is the condition for critical flow in case of maximum discharge?

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3. Determine the velocity in case of critical flow having top width T and area A.

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4. Calculate the specific energy in case of rectangular channel having discharge Q and y_{c} is the critical depth

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5. Estimate the critical depth in case of a rectangular channel having usual dimensions.

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6. Calculate the critical depth of a rectangular channel having width 3m and the discharge through it is 15 m^{3}/s.

a) 0.36m

b) 1.36m

c) 2.36m

d) 3.36m

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7. Calculate the total discharge through a rectangular channel having critical depth of 1.18m and the base width of the channel is 4m.

a) 16 m^{3}/s

b) 20 m^{3}/s

c) 24 m^{3}/s

d) 28 m^{3}/s

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8. Calculate the minimum specific energy of a rectangular channel having critical depth of 1.5m.

a) 3.25m

b) 2.25m

c) 1.25m

d) 0.25m

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Explanation: Minimum specific energy E

_{c}=

^{3}⁄

_{2}y

_{c}= 2.25m.

9. The base width of a rectangular channel is 4m and the maximum discharge through the channel is 10 m3/s, calculate the specific energy.

a) 0.7m

b) 1.0m

c) 1.3m

d) 1.6m

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10. The minimum specific energy of a rectangular channel is 1.3m and the base width of the channel is 10m, calculate the discharge through the channel.

a) 10 m^{3}/s

b) 15 m^{3}/s

c) 20m^{3}/s

d) 25m^{3}/s

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**Sanfoundry Global Education & Learning Series – Fluid Mechanics.**

To practice all areas of Fluid Mechanics, __here is complete set of 1000+ Multiple Choice Questions and Answers__.