Hydraulics and Fluid Mechanics problems
- 1. The maximum discharge over a broad crested weir is
Options- A. 0.384 Cd x L x H1/2
- B. 0.384 Cd x L x H3/2
- C. 1.71 Cd x L x H1/2
- D. 1.71 Cd x L x H3/2 Discuss
Correct Answer: 1.71 Cd x L x H3/2
- 2. A structure whose width is __________ the width of the channel, is called a flumed structure.
Options- A. less than
- B. more than Discuss
Correct Answer: less than
- 3. Coefficient of resistance is the ratio of
Options- A. actual velocity of jet at vena contracta to the theoretical velocity
- B. area of jet at vena contracta to the area of orifice
- C. loss of head in the orifice to the head of water available at the exit of the orifice
- D. actual discharge through an orifice to the dieoretical discharge Discuss
Correct Answer: loss of head in the orifice to the head of water available at the exit of the orifice
- 4. An error of 1% in measuring head over the apex of the notch (H) will produce an error of __________ in discharge over a triangular notch.
Options- A. 1%
- B. 1.5%
- C. 2%
- D. 2.5% Discuss
Correct Answer: 2.5%
- 5. The pressure less than atmospheric pressure is known as
Options- A. suction pressure
- B. vacuum pressure
- C. negative gauge pressure
- D. all of these Discuss
Correct Answer: all of these
- 6. The value of bulk modulus of a fluid is required to determine
Options- A. Reynold's number
- B. Froude's number
- C. Mach number
- D. Euler's number Discuss
Correct Answer: Mach number
- 7. The Reynold's number of a ship is __________ to its velocity and length.
Options- A. directly proportional
- B. inversely proportional Discuss
Correct Answer: directly proportional
- 8. The coefficient of discharge for an external mouthpiece is
Options- A. 0.375
- B. 0.5
- C. 0.707
- D. 0.855 Discuss
Correct Answer: 0.855
- 9. In a venturimeter, the velocity of liquid at throat is __________ than at inlet.
Options- A. higher
- B. lower Discuss
Correct Answer: higher
- 10. The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)
Options- A. 1/RN
- B. 4/RN
- C. 16/RN
- D. 64/RN Discuss
Correct Answer: 16/RN
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