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221.

The highest efficiency is obtained with a channel of

A.	circular	B.	square
C.	rectangular	D.	trapezoidal

222.

In open channels, the specific energy is the

A.	total energy per unit discharge	B.	total energy measured with respect to the datum passing through the bottom of the channel
C.	total energy measured above the horizontal datum	D.	kinetic energy plotted above the free surface of water

223.

The depth of water in a channel corresponding to the minimum specific energy is known as critical depth.

Agree

Disagree

224.

If the depth of water in an open channel is greater than the critical depth, the flow is called

A.	critical flow	B.	turbulent flow
C.	tranquil flow	D.	torrential flow

225.

If the depth of water in an open channel is less than the critical depth, the flow is called

A.	critical flow	B.	turbulent flow
C.	tranquil flow	D.	torrential flow

226.

The flow at critical depth in an open channel is called torrential flow.

Yes

227.

The discharge in an open channel corresponding to critical depth is

A.	zero	B.	minimum
C.	maximum

228.

The most efficient section of a channel is

A.	triangular	B.	rectangular
C.	square	D.	trapezoidal

229.

The rise, in water level, which occurs during the transformation of the unstable shooting flow to the stable streaming flow is called hydraulic jump.

Yes

230.

The critical depth meter is used to measure

A.	velocity of flow in an open channel	B.	depth of flow in an open channel
C.	hydraulic jump	D.	depth of channel