Lakshya Education MCQs

Question: The atmospheric pressure at sea level is
A.103 kN/m2
B.10.3 m of water
C.760 mm of mercury
D.All of these
Answer: Option D

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More Questions on This Topic :

Question 1. The line of action of the buoyant force acts through the Centroid of the
  1.    Submerged body
  2.    Volume of the floating body
  3.    Volume of the fluid vertically above the body
  4.    Displaced volume of the fluid
Answer: Option D
Question 2. The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)
  1.    4μvl/wd²
  2.    8μvl/wd²
  3.    16μvl/wd²
  4.    32μvl/wd²
Answer: Option D
Question 3. The pressure measured with the help of a pressure gauge is called
  1.    Atmospheric pressure
  2.    Gauge pressure
  3.    Absolute pressure
  4.    Mean pressure
Answer: Option B
Question 4. The Bernoulli's equation is based on the assumption that
  1.    There is no loss of energy of the liquid flowing
  2.    The velocity of flow is uniform across any cross-section of the pipe
  3.    No force except gravity acts on the fluid
  4.    All of the above
Answer: Option D
Question 5. The Euler's equation for the motion of liquids is based upon the assumption that
  1.    The fluid is non - viscous, homogeneous and incompressible
  2.    The velocity of flow is uniform over the section
  3.    The flow is continuous, steady and along the stream line
  4.    All of the above
Answer: Option D
Question 6. The force exerted by a jet of water (in a direction normal to flow) impinging on a fixed plate inclined at an angle θ with the jet is
  1.    (waV/2g) × sin θ
  2.    (waV/g) × sin θ
  3.    (waV²/2g) × sin 2θ
  4.    (waV²/g) × sin θ
Answer: Option C

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