Discussion
Home ‣ Mechanical Engineering ‣ Hydraulics and Fluid Mechanics Comments
- Question
The difference between the notch and weir is that the notch is of bigger size and the weir is of a smaller size.
Options- A. Agree
- B. Disagree
- Correct Answer
- Disagree
- 1. The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is
Options- A.
- B.
- C.
- D.
Discuss
- 2. Euler's number is the ratio of __________ force to pressure force.
Options- A. inertia
- B. gravity
- C. viscous Discuss
- 3. The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.
Options- A. less than
- B. more than Discuss
- 4. Select the correct statement
Options- A. Weber's number is the ratio of inertia force to elastic force.
- B. Weber's number is the ratio of gravity force to surface tension force.
- C. Weber's number is the ratio of viscous force to pressure force.
- D. Weber's number is the ratio of inertia force to surface tension force. Discuss
- 5. All the gases are considered to have compressible flow and all the liquids are considered to have incompressible flow.
Options- A. Correct
- B. Incorrect Discuss
- 6. When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid
Options- A. remains horizontal
- B. becomes curved
- C. falls on the front end
- D. falls on the back end Discuss
- 7. Re-entrant or Borda's mouthpiece is an __________ mouthpiece.
Options- A. internal
- B. external Discuss
- 8. The ratio of velocity of fluid in an undisturbed stream to the velocity of sound wave is known as Mach number.
Options- A. Yes
- B. No Discuss
- 9. The specific weight of water in S.I. units is taken as
Options- A. 9.81 kN/m3
- B. 9.81 x 103 kN/m3
- C. 9.81 x 10-6 N/mm3
- D. any one of these Discuss
- 10. The density of air is same at different heights.
Options- A. Correct.
- B. Incorrect Discuss
Hydraulics and Fluid Mechanics problems
Search Results
Correct Answer:
Correct Answer: inertia
Correct Answer: more than
Correct Answer: Weber's number is the ratio of inertia force to surface tension force.
Correct Answer: Correct
Correct Answer: falls on the front end
Correct Answer: internal
Correct Answer: Yes
Correct Answer: 9.81 kN/m3
Correct Answer: Incorrect
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