Q. Which of the following gate is also called flush boards?

View solution

Q. The working of Reinold’s gate is automatic.

View solution

Q. The most common vertical lift gates in modern days is _________________

View solution

Q. An ogee spillway of a concrete gravity dam having FRL of 328 m and MWL of 340 m is provided with vertical gates between piers erected on the spillway. The effective length of the spillway is 60 m. The discharge through the spillway when gates are opened up to the actual reservoir level of 331.0 m will be_____________

View solution

Q. The spillway gate which when lowered cannot be seen from a distance is of the type ______________________

View solution

Q. In the vertical Stoney spillway gate, the rollers are placed between the ______________

View solution

Q. In a fixed roller of a spillway gate, the rollers are attached to the __________________

View solution

Q. Which of the following helps in dissipating the residual energy and to reduce the length of the jump or the basin?

View solution

Q. _____________________ are suitable only for low spillways or weirs.

View solution

Q. In the case of dam spillways, the approaching Froude number usually lies in the range of __________

View solution

Q. Standard stilling basin is provided at the toe of a dam spillway for energy dissipation is usually provided with auxiliary devices like chute blocks and dentated sills for the basic purpose of reducing the length of the stilling basin from about ________________

View solution

Q. The Froude number of a hydraulic jump is 5.5. The jump can be classified as ____________

View solution

Q. Which of the following stilling basin is applicable to only rectangular cross-sections?

View solution

Q. When the Froude number is in the range of 2.5 to 4.5, the jump is ____________________

View solution

Q. Standard USBR stilling basin-II is useful for energy dissipation at the bottom of the overflow structure, if the approaching Froude number is ________________

View solution

Q. A very steady and stable hydraulic jump is usually formed in the flows involving the approaching Froude number in the range of _____________________

View solution

Q. A troublesome and oscillating hydraulic jump is normally met in cases of _____________

View solution

Q. When the TWC lies below the JHC at all discharges, the problem can be solved by which of the following provisions?

i. Constructing a sloping apron above the river bed
ii. Provision of roller bucket type of energy dissipator
iii. Provision of a ski-jump bucket
iv. A sloping apron below the river bed
v. Construction of a subsidiary dam
vi. A sloping apron partly above and partly below the river bed

View solution

Q. A sloping apron is provided partly above the river bed and partly below the river bed in case of ____________________________

View solution

Q. What is the expected solution for the case when the T.W.C is lying above the J.H.C curve at all discharges?

View solution