Q. Which of the following profiles are used for guide vanes to ensure smooth flow without separation?

  • (A) rectangular
  • (B) bent rectangular
  • (C) elliptical
  • (D) aerofoil
💬 Discuss
✅ Correct Answer: (D) aerofoil
Explanation: smooth flow and flow without separation (eddiless flow) can be ensured when the cross sectional profile of the guide vanes are aerofoil in nature. aerofoil shape is used in airplane wings to ensure smooth flow too. rectangular profiles are not effective in guiding the water into the runner. elliptical profiles will cause more drag, finally ending up with turbine inefficiency.

Published by Mr. Dubey ⭐ 109.99K Points at 19-Sep-2023 08:23 pm in Fluid Mechanics and Machinery

Explanation by: Mr. Dubey
smooth flow and flow without separation (eddiless flow) can be ensured when the cross sectional profile of the guide vanes are aerofoil in nature. aerofoil shape is used in airplane wings to ensure smooth flow too. rectangular profiles are not effective in guiding the water into the runner. elliptical profiles will cause more drag, finally ending up with turbine inefficiency.

💬 Discussion

Related MCQs

Q. a ______ is an embankment of some material.

Q. ______ is the branch of engineering dealing with the study of behaviour of fluid when it is at rest or in motion.

Q. The loss of pressure head in case of laminar flow is proportional to

Q. A moist soil sample of volume 60 cc. weighs 108 g and its dried weight is 86.4 g. If its absolute density is 2.52, the degree of saturation is

Q. The slab is designed as one way if the ratio of long span to short span is

Q. For bridge slabs, the amount of transverse reinforcement is taken as ?

Q. The process of calculating the resource requirement of a project is known as ?

Q. What SMB stands for?

Q. A transition curve can not be a ?

Q. The reduction in project time normally results in

📊 Question Analytics

👁️
70
Total Visits
📽️
3 y ago
Published
🎖️
Mr. Dubey
Publisher
📈
85%
Success Rate