Engineering Mechanics

(^758) „„„„„ A Textbook of Engineering Mechanics
OBJECTIVE TYPE QUESTIONS

1. When a body is wholly or partially immersed in a liquid, it is lifted up by a force equal
   to the weight of the liquid displaced by the body. This principle is called principle of
   floatation.
   (a) yes (b)no


2. The force of buoyancy is...............the weight of the liquid displaced by the body.
   (a) less than (b) equal to (c) more than


3. A body will float in a liquid if the force of buoyancy is.............. the weight of liquid
   displaced.
   (a) less than (b) equal to (c) more than


4. The centre of gravity of the volume of a liquid displaced by a floating body is called
   (a) centre of pressure (b) centre of buoyancy
   (c) metacentre (d) none of the above


5. When a body, floating in a liquid, is given a small angular displacement, it starts oscillat-
   ing about a point. This point is known as
   (a) centre of pressure (b) centre of buoyancy
   (c) metacentre (d) centre of gravity


6. The metacentric height of a floating body is the distance between the
   (a) centre of gravity of the floating body and the centre of buoyancy.
   (b) centre of gravity of the floating body and the metacentre.
   (c) centre of buoyancy and metacentre
   (d) original centre of buoyancy and new centre of buoyancy.


7. The metacentric heights of two bodies B and A are 1 m and 1.25 m respectively. Select the
   correct statement for these bodies.
   (a) both the bodies have equal stability
   (b) both the bodies are unstable.
   (c) body A is more stable than the body B.
   (d) body B is more stabel than the body A.

ANSWERS

1. (b) 2. (b) 3. (c) 4. (b) 5. (c) 6. (b)


2. (d).

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