Hydraulics and Fluid Mechanics problems
- 1. A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is
Options- A. 0.46
- B. 0.64
- C. 0.78
- D. 0.87 Discuss
Correct Answer: 0.64
- 2. The pressure intensity in kN/m2 (or kPa) at any point in a liquid is (where w = Specific weight of liquid, and h = Depth of liquid from the surface)
Options- A. w
- B. wh
- C. w/h
- D. h/w Discuss
Correct Answer: wh
- 3. The discharge over a rectangular notch is
Options- A. inversely proportional to H3/2
- B. directly proportional to H3/2
- C. inversely proportional to H5/2
- D. directly proportional to H5/2 Discuss
Correct Answer: directly proportional to H3/2
- 4. A glass tube of small diameter (d) is dipped in fluid. The height of rise or fall in the tube given by (where w = Specific weight of liquid, ? = Angle of contact of the liquid surface, and ? = Surface tension)
Options- A.
- B.
- C.
- D.
Discuss
Correct Answer:
- 5. The vacuum pressure can be measured with the help of a piezometer tube.
Options- A. True
- B. False Discuss
Correct Answer: False
- 6. According to Bazin, the coefficient of discharge varies with the height of water over the sill of a weir.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 7. The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is
Options- A. 0.0116 stoke
- B. 0.116 stoke
- C. 0.0611 stoke
- D. 0.611 stoke Discuss
Correct Answer: 0.0116 stoke
- 8. Water is a __________ fluid.
Options- A. real
- B. ideal
- C. newtonian
- D. non-newtonian Discuss
Correct Answer: newtonian
- 9. Falling drops of water become spheres due to the property of
Options- A. surface tension of water
- B. compressibility of water
- C. capillarity of water
- D. viscosity of water Discuss
Correct Answer: surface tension of water
- 10. If the value of coefficient of discharge increases, the discharge through the orifice decreases.
Options- A. True
- B. False Discuss
Correct Answer: False
More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.