Discussion
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- Question
The best side slope for most economical trapezoidal section, is
Options- A. 30°
- B. 45°
- C. 60°
- D. None of these.
- Correct Answer
- 60°
- 1. If the forces are due to inertia and gravity, and frictional resistance plays only a minor role, the design of the channels is made by comparing
Options- A. Reynold number
- B. Froude number
- C. Weber number
- D. Mach number. Discuss
- 2. Water displaced by a floating wooden block of density 0.75, 5 m long, 2 m wide and 3 m high, is
Options- A. 17.5 m3
- B. 20.0 m3
- C. 22.5 m3
- D. 25 km3. Discuss
- 3. The velocity distribution of viscous fluid through a circular/pipe is :
Options- A. hyperbolic
- B. circular
- C. parabolic
- D. elliptical. Discuss
- 4. Kinematic viscosity of liquids by equation
is determined by :
Options- A. Redwood viscometer
- B. Engler viscometer
- C. Saybolt universal viscometer
- D. None of these. Discuss
- 5. For the most economical trapezoidal open channel,
Options- A. half of the top width must be equal to one of the sloping sides
- B. the hydraulic mean depth must be equal to half the depth of flow
- C. the semicircle drawn with top width as diameter must touch the three sides of the channel
- D. All of these. Discuss
- 6. In an open tube, free surface of mercury remains
Options- A. horizontal
- B. curved upwards
- C. curved downwards
- D. none of these. Discuss
- 7. Back water curve is caused if
Options- A. friction head loss is more than the bed slope
- B. pressure is due to weir in the channel
- C. there is an increase in width of the channel
- D. none of these. Discuss
- 8. If total head available at the inlet of pipe and f1 is the loss of head due to friction in the pipe, the maximum efficiency of transmission of power (?max) is
Options- A. 1/2
- B. 2/3
- C. 3/4
- D. 4/5 Discuss
- 9. Manometers are used to measure
Options- A. pressure in water channels, pipes etc.
- B. difference in pressure at two points
- C. atmospheric pressure
- D. very low pressure. Discuss
- 10. Discharge over an ogee weir remains the same as that of
Options- A. sharp crested weir
- B. triangular weir
- C. cippoletti weir
- D. drowned weir. Discuss
Hydraulics problems
Search Results
Correct Answer: Froude number
Correct Answer: 22.5 m3
Correct Answer: parabolic
Correct Answer: Saybolt universal viscometer
Correct Answer: All of these.
Correct Answer: curved downwards
Correct Answer: pressure is due to weir in the channel
Correct Answer: 2/3
Correct Answer: pressure in water channels, pipes etc.
Correct Answer: cippoletti weir
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