Discussion
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- Question
When no air is left below the nappe and water stream adheres to the down stream face of the weir, it is known as
Options- A. free nappe
- B. depressed nappe
- C. clinging nappe
- D. none of these.
- Correct Answer
- clinging nappe
- 1. The rise of the liquid along the walls of a revolving cylinder above the initial level, is
Options- A. greater than the depression of the liquid at the axis of rotation
- B. lesser than the depression of the liquid at the axis of rotation
- C. the same as the depression of the liquid at the axis of rotation
- D. none of these. Discuss
- 2. Piezometers 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
- 3. The specific weight of water is 1000 kg/m3
Options- A. at normal pressure of 760 mm
- B. at 4°C temperature
- C. at mean sea level
- D. all the above. Discuss
- 4. If Cv, Cc, Cd and Cr are the hydraulic coefficients of an orifice, then
Options- A. Cd = Cc . Cv
- B. Cr = 1 + Cv2/Cd
- C. Cv = Cc + Cd
- D. Cc = Cv/Cd Discuss
- 5. For the flow of liquid from an open ended tube (or nozzle) leading to the formation of spray of liquid drops, the number generally applied, is
Options- A. Froude number
- B. Weber number
- C. Reynold number
- D. Mach number. Discuss
- 6. The ratio of frictional factor and coefficient of friction used in general equation for a head loss in a pipe, is
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
- 7. Most economical section of a triangular channel, is
Options- A. equilateral triangle
- B. right angled triangle
- C. isosceles triangle with 45° vertex angle
- D. right angled triangle with equal sides. Discuss
- 8. Dimensions of the dynamic viscosity (?) are
Options- A. MLT-2
- B. M-1L-1T-1
- C. ML-1T-2
- D. ML-1T-1. Discuss
- 9. In Chezy's formula V = C mi
Options- A. V is the mean velocity of flow
- B. m is the hydraulic mean depth
- C. i is the loss of head per unit length of pipe
- D. All the above. Discuss
- 10. Power transmitted through a pipe is maximum when friction head loss, is
Options- A. one-half of the total head supplied
- B. one-third of the total head supplied
- C. one-fouth of the total head supplied
- D. equal to the total head supplied. Discuss
Hydraulics problems
Search Results
Correct Answer: the same as the depression of the liquid at the axis of rotation
Correct Answer: very low pressure.
Correct Answer: all the above.
Correct Answer: Cd = Cc . Cv
Correct Answer: Weber number
Correct Answer: 4
Correct Answer: right angled triangle with equal sides.
Correct Answer: ML-1T-1.
Correct Answer: All the above.
Correct Answer: one-third of the total head supplied
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