Friction head loss in open channels is determined by_________________?

Related Mcqs:

1. The loss of head H/ L is proportional to the length of creep. There fore the loss of head per unit creep length is called ______________________?

   A. Hydraulic gradient
   B. Head loss
   C. Creep length
   D. Exit gradient

2. The loss of head due to friction according to Darcy’s formula is _____________________?

   A. 4fLv2/gd
   B. 4fLv2/2gd
   C. 4fLv/gd
   D. 4fLv/2gd

3. The law that states that the discharge of sub-soil water is directly proportional to the loss of head and the area of soil sample and inversely proportional to to the length of soil sample ___________________?

   A. Archimed’s principle
   B. Darcy’s law
   C. Permeability law
   D. Thiem’s law

4. Darcy formula for loss of head in pipes is given by, hf=4fl v2 / __________________?

   A. 2gd
   B. gd
   C. g2d
   D. gd2

5. For an economical design of gravity dam, the shear friction factor causec compression strength should lie between____________________?

   A. 1.5 to 4.0
   B. 2.0 to 4.0
   C. 2.5 to 4.5
   D. 3 to 5

6. A river before its joins the sea, gets divided into small channels, thus forming a Triangular shape called __________________?

   A. Unstable river
   B. Deltaic river
   C. Stable river
   D. Degrading river

7. The discharge over a rectangular notch is determined by _____________________?

   A. 2/3 cd. b (2 gh) 1/2
   B. 2/3 cd. B (2g) 1/2 H
   C. 2/3 cd. B (2g) 1/2 H3/2
   D. 2/3 cd. b (2g) 1/2 H 5/2

8. Theoretical velocity of the jet at Vena Contracta is determined by ________________?

   A. (2 gh)1/2
   B. 2(gh)1/2
   C. 2g (h)1/2
   D. 2gh

9. The total length of impervious floor on down stream of the hydraulic structure is determined by Bligh’s Theory__________________?

   A. Lane
   B. Darcy
   C. Khosla
   D. All are correct

10. The water way from a weir is determined by using Lacey’s wetted perimeter i.e. P=_______(Q)1/2 ?

    A. 3.50
    B. 3.75
    C. 4.75
    D. 5.75