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

  • A steady GVF
  • B unsteady RVF
  • C steady SVF
  • D unsteady SVF

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 \({ H}_{ 2}{ ,S}_{ 3 }and{ S}_{ 1 }\)
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