Hydraulics problems
- 1. The discharge over a Cipolletti weir of length 2.185 m when the head over the weir is 1 m, is
Options- A. 2.0 m3
- B. 2.5 m3
- C. 3.0 m3
- D. 4.0 m3. Discuss
Correct Answer: 4.0 m3.
- 2. Hydraulic gradient is equal to difference in water surfaces
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 3. Cavitation is caused by
Options- A. Low pressure
- B. High pressure
- C. Low velocity
- D. High velocity
- E. None of these. Discuss
Correct Answer: Low pressure
- 4. A steady uniform flow is through
Options- A. a long pipe at decreasing rate
- B. a long pipe at constant rate
- C. an expanding tube at constant rate
- D. an expanding tube at increasing rate
- E. a long pipe at increasing rate. Discuss
Correct Answer: a long pipe at constant rate
- 5. Gauge pressure is
Options- A. absolute pressure - atmospheric pressure
- B. absolute pressure + atmospheric pressure
- C. atmospheric pressure - absolute pressure
- D. none of these. Discuss
Correct Answer: absolute pressure - atmospheric pressure
- 6. The height of water level in a tank above the centre of a circular hole 2.5 cm in diameter is 50 m. The velocity of water flowing through the hole, is
Options- A. 31.1 m/sec
- B. 31.2 m/sec
- C. 31.3 m/sec
- D. 31.4 m/sec. Discuss
Correct Answer: 31.3 m/sec
- 7. In order to avoid capillary correction, the minimum diameter of a manometer used for measuring pressure, should be
Options- A. 2 mm
- B. 4 mm
- C. 6 mm
- D. 8 mm
- E. 10 mm. Discuss
Correct Answer: 6 mm
- 8. If cohesion between the molecules of a fluid is more than adhesion between the fluid and glass, the free level of fluid in a dipped glass tube will be
Options- A. higher than the surface of liquid
- B. same as the surface of liquid
- C. lower than the surface of liquid
- D. none of these. Discuss
Correct Answer: lower than the surface of liquid
- 9. Euler's equation for the motion of liquids assumes that
Options- A. fluid is viscous
- B. fluid is homogeneous and incompressible
- C. velocity of flow is non-uniform over the section
- D. flow is unsteady along the stream line. Discuss
Correct Answer: fluid is homogeneous and incompressible
- 10. Mach number is the ratio of inertia force to
Options- A. viscosity
- B. surface tension
- C. gravitational force
- D. elasticity. Discuss
Correct Answer: elasticity.
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