A. High flood level
B. Dangerous condition
C. Hydraulic design condition
D. Worst condition
Related Mcqs:
- When the weight of weir balances the up lift pressure caused by the head of the water seeping below the weir bed is called ___________________?
A. Cippollite weir
B. Broad crested weir
C. Gravity weir
D. Non-gravity weir - When a weir is constructed, the downstream .bed of the river goes on eroding and consequently causes progressive lowering of the bed on downstream of weir called__________________?
A. Retrogression
B. Lowering down of bed
C. Ponding on down stream
D. All are correct - If the weir flood is designed continuous with divide piers as reinforced structure,such that the weight of divide piers, keep the structure safe against uplift, is called__________________?
A. Non-gravity weir
B. Gravity weir
C. Sharp crested weir
D. Rectangular weir - In high floods, to avoid spilling of flood water over the gates, a wall is provided from pond level to high Flood level. This wall spans for the entire length of regulator, rest on piers, sustain water pressure by its weight called_____________________?
A. Retaining wall
B. Divide wall
C. Breast wall
D. Cantilever wall - The wall of masonry or concrete, constructed at 90° to the axis of weir to separate normal weir from under sluices is called____________________?
A. Divide wall
B. Retaining wall
C. Toe wall
D. All are correct - The rise in river water level at up stream due to construction of weir is called__________________?
A. Pond level
B. HFL
C. Afflux
D. FSL - Hydraulic structures are designed for a safe flow of flood. The floods which are equal in designed magnitude life of the project is called _____________________?
A. High floods
B. Ordinary floods
C. Low floods
D. Probable flood - When the high flood level of the drain is sufficiently below the bed of the Canal that the drainage water flows freely under gravity, such structure is called___________________?
A. Aqueduct
B. Syphon-aqueduct
C. Cross-Drainage
D. Non-gravity structure - The under sluices in a weir are provided, at the level of upstream floor dispose off the sediment deposited on downstream is called______________________?
A. Under sluices
B. Head sluices
C. Scouring sluices
D. Sluice gates - 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
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