Hydraulics and Fluid Mechanics problems
- 1. The velocity of liquid flowing through an orifice varies with the available head of the liquid.
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
- 2. A moving fluid mass may be brought to a static equilibrium position, by aplying an imaginary inertia force of the same magnitude as that of the accelerating force but in the opposite direction. This statement is called
Options- A. Pascal's law
- B. Archimede's principle
- C. D-Alembert's principle
- D. none of these Discuss
Correct Answer: D-Alembert's principle
- 3. The specific gravity of water is taken as
Options- A. 0.001
- B. 0.01
- C. 0.1
- D. 1 Discuss
Correct Answer: 1
- 4. The total pressure on the bottom of a closed cylindrical vessel completely filled up with a liquid is the sum of the total centrifugal pressure and the weight of the liquid in the vessel.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 5. When the Mach number is more than 6, the flow is called
Options- A. sub-sonic flow
- B. sonic flow
- C. super-sonic flow
- D. hyper-sonic flow Discuss
Correct Answer: hyper-sonic flow
- 6. When the Mach number is equal to unity, the flow is called sonic flow.
Options- A. True
- B. False Discuss
Correct Answer: True
- 7. Poise is the unit of viscosity in C.G.S. system of units.
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
- 8. The reciprocal of Euler's number is called Newton number.
Options- A. Yes
- B. No Discuss
Correct Answer: Yes
- 9. When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called
Options- A. Pascal's law
- B. Archimede's principle
- C. principle of floatation
- D. Bernoulli's theorem Discuss
Correct Answer: Archimede's principle
- 10. The unit of surface tension is
Options- A. N/m
- B. N/m2
- C. N/m3
- D. N-m Discuss
Correct Answer: N/m
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