Lakshya Education MCQs

Question: Which of the following turbine is preferred for 0 to 25 m head of water?
A. Pelton wheel
B. Kaplan turbine
C. Francis turbine
D. None of these
Answer: Option B

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More Questions on This Topic :

Question 1. The force present in a moving liquid is
  1.     Inertia force
  2.     Viscous force
  3.     Gravity force
  4.     All of these
Answer: Option D
Question 2. The rise or depression of liquid in a tube due to surface tension will increase in size of tube will
  1.     Increase
  2.     Remain unaffected
  3.     May increase or decrease depending on the characteristics of liquid
  4.     Decrease
Answer: Option D
Question 3. When the mach number is between __________ the flow is called super-sonic flow.
  1.     1 and 2.5
  2.     2.5 and 4
  3.     4 and 6
  4.     1 and 6
Answer: Option D
Question 4. The hydraulic mean depth or the hydraulic radius is the ratio of
  1.     Area of flow and wetted perimeter
  2.     Wetted perimeter and diameter of pipe
  3.     Velocity of flow and area of flow
  4.     None of these
Answer: Option A
Question 5. Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of
  1.     39.2%
  2.     49.2%
  3.     68.8%
  4.     84.8%
Answer: Option D
Question 6. The ratio of the inertia force to the viscous force is called
  1.     Reynold's number
  2.     Froude's number
  3.     Weber's number
  4.     Euler's number
Answer: Option A

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