Lakshya Education MCQs

Question: The force present in a moving liquid is
A. Inertia force
B. Viscous force
C. Gravity force
D. All of these
Answer: Option D

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More Questions on This Topic :

Question 1. 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 2. 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 3. An open tank containing liquid is moving with an acceleration on an inclined plane. the inclination of the free surface of the liquid will be __________ to the acceleration of the tank.
  1.     Equal to
  2.     Directly proportional
  3.     Inversely proportional
  4.     None of these
Answer: Option B
Question 4. Which of the following turbine is preferred for 0 to 25 m head of water?
  1.     Pelton wheel
  2.     Kaplan turbine
  3.     Francis turbine
  4.     None of these
Answer: Option B
Question 5. 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 6. 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

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