Lakshya Education MCQs

Question: The speed of a turbine runner is
Options:
A. Directly proportional to H1/2
B. Inversely proportional to H1/2
C. Directly proportional to H3/2
D. Inversely proportional to H3/2
Answer: Option A

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More Questions on This Topic :

Question 1. The shear stress between the two liquid layers is __________ proportional to the distance between two layers.
  1.     Directly
  2.     Inversely
  3.     Both A and B
  4.     None of these
Answer: Option B
Question 2. The speed of a turbine runner is
  1.     Directly proportional to H1/2
  2.     Inversely proportional to H1/2
  3.     Directly proportional to H3/2
  4.     Inversely proportional to H3/2
Answer: Option A
Question 3. According to fan laws, at constant pressure, the speed capacity and power vary
  1.     Directly as the air or gas density
  2.     Inversely as square root of density
  3.     Inversely as density
  4.     As square of density
Answer: Option B
Question 4. According to fan laws, at constant pressure, the speed capacity and power vary
  1.     Directly as the air or gas density
  2.     Inversely as square root of density
  3.     Inversely as density
  4.     As square of density
Answer: Option B
Question 5. The force exerted (in newton) by a jet of water impinging normally on a fixed plate is (where w = specific weight of water in n/m3, a = cross-sectional area of jet in m², and v = velocity of jet in m/s)
  1.     waV / 2g
  2.     waV / g
  3.     waV² / 2g
  4.     waV² / g
Answer: Option D
Question 6. Centrifugal pump is started with its delivery valve
  1.     Kept fully closed
  2.     Kept fully open
  3.     Irrespective of any position
  4.     Kept 50% open
Answer: Option A

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