Hydraulic Machines MCQs with answers Page - 20

Here, you will find a collection of MCQ questions on Hydraulic Machines. Go through these questions to enhance your preparation for upcoming examinations and interviews.

To check the correct answer, simply click the View Answer button provided for each question.

Have your own questions to contribute? Click the button below to share your MCQs with others!

+ Add Question

A

Admin • 833K Points
Coach

Q. Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m. ?

  • (A) Pelton wheel
  • (B) Francis turbine
  • (C) Kaplan turbine
  • (D) none of these

A

Admin • 833K Points
Coach

Q. A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the ?

  • (A) kinetic head
  • (B) velocity head
  • (C) manometric head
  • (D) static head

A

Admin • 833K Points
Coach

Q. Discharge of a centrifugal pump is ?

  • (A) directly proportional to N
  • (B) inversely proportional to N
  • (C) directly proportional to N²
  • (D) inversely proportional to N²

A

Admin • 833K Points
Coach

Q. The speed ratio in case of Francis turbine varies from ?

  • (A) 0.15 to 0.3
  • (B) 0.4 to 0.5
  • (C) 0.6 to 0.9
  • (D) 1 to 1.5

A

Admin • 833K Points
Coach

Q. The cavitation in a hydraulic machine ?

  • (A) causes noise and vibration of various parts
  • (B) reduces the discharge of a turbine
  • (C) causes sudden drop in power output and efficiency
  • (D) all of the above

A

Admin • 833K Points
Coach

Q. A Pelton wheel is ?

  • (A) tangential flow impulse turbine
  • (B) inward flow impulse turbine
  • (C) outward flow impulse turbine
  • (D) inward flow reaction turbine

A

Admin • 833K Points
Coach

Q. The overall efficiency for a Pelton wheel lies between ?

  • (A) 0.50 to 0.65
  • (B) 0.65 to 0.75
  • (C) 0.75 to 0.85
  • (D) 0.85 to 0.90

A

Admin • 833K Points
Coach

Q. In an inward flow reaction turbine ?

  • (A) the water flows parallel to the axis of the wheel
  • (B) the water enters at the centre of the wheel and then flows towards the outer periphery of the wheel
  • (C) the water enters the wheel at the outer periphery and then flows towards the centre of the wheel
  • (D) the flow of water is partly radial and partly axial

A

Admin • 833K Points
Coach

Q. If the ratio of all the corresponding linear dimensions are equal, then the model and the prototype are said to have ?

  • (A) geometric similarity
  • (B) kinematic similarity
  • (C) dynamic similarity
  • (D) none of these

A

Admin • 833K Points
Coach

Q. A turbine develops 10 000 kW under a head of 25 metres at 135 r.p.m. Its specific speed is ?

  • (A) 175.41p.m
  • (B) 215.5 r.p.m
  • (C) 241.5 r.p.m
  • (D) 275.4 r.p.m

Add MCQ in this Category

If you want to share an MCQ question in this category, it's a great idea! It will be helpful for many other students using this website.

Share Your MCQ

Browse Categories

Click on category to learn MCQs of that category.