### Civil Engineering - Hydraulics

#### Question - 1

The velocity distribution vertical in an open channel is shown in the figure .The kinetic energy correction factor ($\alpha$) and the momentum correction factor ($\beta$) will be respectively

• A (1-a)2 , (1-a)
• B $\frac{1}{(1-a)^2}$ , $\frac{1}{(1-a) }$
• C $\frac{1}{(1-a) }$ , $\frac{1}{(1-a)^2}$
• D 0,0

#### Question - 2

A steady flow occurs in an open channel with in  flow qm3/s per unit width as show in figure . The mass conservation equation is

• A $\frac{\partial q}{\partial x}$ = 0
• B $\frac{\partial Q}{\partial x}$ = 0
• C $\frac{\partial Q}{\partial x}$  - q = 0
• D $\frac{\partial Q}{\partial x}$  + q = 0

#### Question - 3

Steady flow in a channel exists when the

• A flow in a uniform
• B depth does not change with time
• C channel is frictionless
• D channel bed si not curved

#### Question - 4

A flood wave while passing down a river section protected by embankments , spills over the embankment at certain locations. The flow is classified as

#### Question - 5

At a section in a channel expansion, the velocity over a quarter of the cross section is zero and is uniform over the remaining three - fourths of the area.The kinetic energy correction factor is

• A 1.78
• B   1.33
• C 1.67
• D 2.00

#### Question - 6

A steep channel is inclined at 45to the horizontal and carries a flow at a depth of 0.75 m. The pressure at the bed of the channel  is

• A 7358 N/m2
• B 3679 N/m2
• C 5203 N/m2
• D 10401 N/m2

#### Question - 7

A channel with very small value of longitudinal slope so has its water surface parallel to its bed. With the channel bed as the datum , teh variation of piezometeric head HP with distance above the bed  y in the channel can be represented by the following

• A
• B
• C
• D

#### Question - 8

For an open channel flow to take place between two sections

• A the channel  bed must always slope in the direction of the flow
• B the upstream depth must be larger than the downsstream depth
• C the upstream momentum must be larger than the downstream momentum
• D the total energy at the upstream and must be larger than the downstream end

#### Question - 9

A channel with slope is followed by a horizontal channel and then by a steep channel. What gradually varied profile will occur

• A ${ M }_{ 1 }{ ,H }_{ 1 },{ S }_{ 1 }$
• B ${ M }_{ 2}{ ,H }_{ 2 },{ S }_{ 2 }$
• C ${ M }_{ 1 }{ ,H }_{ 2 },{ S }_{ 3 }$
• D ${ M }_{ 1 }{ ,H }_{ 2 },{ S }_{ 2 }$

#### Question - 10

A sluice gate opening in a camal is shown in the given figure the shape of water surface profile at X,Y, and Z will be respectively (HJ=Hydraulic Jump)

• A ${ M }_{ 1}{ ,M}_{ 3 }and{ M}_{ 1 }$
• B ${ M }_{ 2}{ ,M}_{ 3 }and { M}_{ 2}$
• C ${ S}_{ 1},{ S}_{ 3 }and{ S}_{ 2 }$
• D ${ H}_{ 2}{ ,S}_{ 3 }and{ S}_{ 1 }$