Lakshya Education MCQs

Question: A body floats in stable equilibrium
Options:
A.when its meatcentric height is zero
B.when the metancentre is above e.g.
C.when its e.g. is below it’s center of buoyancy
D.metacentre has nothing to do with position of e.g. for determining stability
Answer: Option B

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More Questions on This Topic :

Question 1. Metacentric height for small values of angle of heel is the distance between the
  1.    centre of gravity and centre of buoy-ancy
  2.    centre of gravity and metacentre
  3.    centre of buoyancy and metacentre
  4.    free surface and centre of buoyancy
Answer: Option B
Question 2. If no resistance is encountered by displacement, such a substance is known as
  1.    fluid
  2.    water
  3.    perfect solid
  4.    ideal fluid
Answer: Option D
Question 3. The volumetric change of the fluid caused by a resistance is known as
  1.    volumetric strain
  2.    volumetric index
  3.    compressibility
  4.    adhesion
Answer: Option C
Question 4. A floating body is said to be in a state of stable equilibrium
  1.    when its metacentric height is zero
  2.    when the metacentre is above the centre of gravity
  3.    when the metacentre is below the centre of gravity
  4.    only when its centre of gravity is below its centre of buoyancy
Answer: Option B
Question 5. A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is
  1.    5kN
  2.    lOkN
  3.    15 kN
  4.    20 kN
Answer: Option B
Question 6. The normal stress in a fluid will be constant in all directions at a point only if
  1.    it is incompressible
  2.    it has uniform viscosity
  3.    it is frictionless
  4.    it is at rest
Answer: Option D

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