Test: Flow Through Open Channels - 3 - Civil Engineering (CE) MCQ

A steady discharge of 1 cumec flows uniformly in a rectangular channel 1 m wide at a depth of 250 mm. The slope of the channel bed is

In case of a hydraulic jump in a rectangular channel, the post jump, depth d₂, when Froude number F₁ is √3 , is 
where d₁ = pre-jump depth

The flow characteristic before and after a hydraulic jump are such that:

The figure below shows a gradually varied flow situation in an open channel with a break in bed slope. Types of water surface profiles occurring from left to right are

The sequent depth ratio in a. hydraulic jump formed in a horizontal rectangular channel is 16.48. The Froude number of the supercritical stream is

An open channel carries water with a velocity of 0.605 m/s. If the average bed shear stress is 1.0 N/m², then the Chezy’s constant C is equal to

The Chezy’s and Manning’s formulae are related by

Open channel flow is the one in which

In a subdritica! flow, as the specific energy in a channel is decreased, the depth of flow

If the specific energy at the upstream section of a rectangular channel is 3 m and minimum specific energy is 2.5 m, the maximum height of jump without causing afflux will be

If the Froude’s number before a hydraulic jump occurring in a rectangular horizontal channel is √10 then the Froude’s number after the jump will be

Least possible value of correction factor for
1. kinetic energy is zero
2. kinetic energy is 1
3. momentum is zero
4. momentum is 1
The correct statements are

If velocity is zero over 1/3rd of a cross-section and is uniform over remaining 2/3rd of the cross- section, then the correction factor for kinetic energy is

The depth of flow for maximum velocity in a circular channel section with diameter equal to 1.5 m is

The critical depth of flow in a most economical triangular channel section for a discharge of 1 m³/sec is given by

The mild slope profile M₂ ocdufs for depth

Gradually varied flow in open channel is caused when