Water emerges from an ogee spillway with velocity 13.72 m/s and depth = 3.0 m at

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Question
Water emerges from an ogee spillway with velocity 13.72 m/s and depth = 3.0 m at its toe. The tail water depth required to form a hydraulic jump at the toe is
Options
A. 6.48 m
B. 5.24 m
C. 3.24 m
D. 2.24 m

Correct Answer

3.24 m

GATE Exam Questions problems

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3. In a BOD test, 5 ml of waste is added to 295 ml of aerated pure water. Initial dissolved oxygen (D.O) content of the diluted sample is 7.8 mg/l. After 5 days of incubation at 20�C, the D.O. content of the sample is reduced to 4.4 mg/l. The BOD of the waste water is :
Options
A. 196 mg/l
B. 200 m/l
C. 204 mg/l
D. 208 mg/l

4. A deep cut of 7 m has to be made in a clay with unit weight 16 kN/m³ and a cohesion of 25 kN/m². What will be the factor of safety if one has to have a slope angle of 30�? Stability number is given to be 0.178 (from Taylor's chart) for a depth factor of 3.
Options
A. 0.80
B. 1.1
C. 1.25
D. 1.0

6. If YY is the centroidal axis of a T beam-section subjected to plastic moment, Mp, the neutral axis lies,
Options
A. above the line ZZ
B. between the lines YY and ZZ
C. between the lines XX and YY
D. below the line XX

8. An inverted siphon is a
Options
A. device for distributing septic tank effluent to a soil absorption system
B. device for preventing overflow from elevated water storage tank
C. device for preventing crown corrosion of sewer
D. section of sewer which is dropped below the hydraulic grade line in order to avoid an obstacle.

9. Two flow patterns are represented by their stream functions ?₁ and ?₂ as given below:
?₁ = x² + y², ?₂ = 2xy
If these two patterns are superimposed on one another, the resulting streamline pattern can be represented by one of the following :
Options
A. A family of parallel straight lines
B. A family of circles
C. A family of parabolas
D. A family of hyperbolas

10. The two criteria for the determination of allowable bearing capacity of a foundation are
Options
A. tensile failure and compression failure.
B. tensile failure and settlement.
C. bond failure and shear failure.
D. shear failure and settlement.

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