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MCQs 1: Centre of pressure compared to e.g. is______________?

above it below it at same point above or below depending on area of body none of the above
Answer Explanation

MCQs 2: The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called___________________?

upthrust reaction buoyancy metacentre center of pressure
Answer Explanation

MCQs 3: A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is__________________?

1 5 7 6
Answer Explanation

MCQs 4: Center of buoyancy is the___________________?

centroid of the displaced volume of fluid center of pressure of displaced volume e.g. of floating ‘body does not exist none of the above
Answer Explanation

MCQs 5: The horizontal component of buoyant force is__________________?

negligible same as buoyant force zero non of these
Answer Explanation

MCQs 6: A body floats in stable equilibrium________________?

when its meatcentric height is zero when the metancentre is above e.g when its e.g. is below it’s center of buoyancy metacentre has nothing to do with position of e.g. for determining stability none of the above
Answer Explanation

MCQs 7: The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if __________________?

the area is horizontal the area is vertical the area is inclined all of the above none of the above
Answer Explanation

MCQs 8: A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at vater surface. The hydrostatic force on square surface is __________________?

9,000 kg 13,500 kg 18,000 kg 27,000 kg 30,000 kg
Answer Explanation

MCQs 9: If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.2 kg/cm”, the pressure at a depth of 50 m below the oil surface will be _____________________?

2 meters of water column 3 meters of water column 5 meters of water column 6 meters of water Column 7 meters of water column
Answer Explanation

MCQs 10: Choose the wrong statement___________________?

The horizontal component of the hydro-static force on any surface is equal to the normal force on the vertical projection of the surface The horizontal component acts through the center of pressure for the vertical projection The vertical component of the hydrostatic force on any surface is equal to the weight of the volume of the liquid above the area he vertical component passes through the center of pressure of the volume Center of pressure acts at a greater depth than center of gravity
Answer Explanation

MCQs 11: The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is ______________________?

2.4 m 3.0 m 4.0 m 2.5 m 5.0 m
Answer Explanation

MCQs 12: Metacentre is the point of intersection of _________________________?

vertical upward force through e.g. of body and center line of body buoyant force and the center line of body mid point between e.g. and center of buoyancy all of the above none of the above
Answer Explanation

MCQs 13: For a body floating in a liquid the normal pressure exerted by the liquid acts at _________________?

bottom surface of the body e.g. of the body metacentre all points on the surface of the body all of the above
Answer Explanation

MCQs 14: According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to __________________?

the weight of the body more than the weight of the body less than the weight of the body weight of the fluid displaced by the body weight of body plus the weight of the fluid displaced hy the body
Answer Explanation

MCQs 15: Buoyant force is___________________?

resultant force acting on a floating body equal to the volume of liquid displaced force necessary to keep a body in equilibrium the resultant force on a body due to the fluid surrounding it none of the above
Answer Explanation

MCQs 16: Ratio of inertia force to surface Jension is known as ________________________?

Mach number Froude number Reynold’s number Weber’s number none of the above
Answer Explanation

MCQs 17: When a body floating in a liquid, is displaced slightly, it oscillates about ___________________?

e.g. of body center of pressure center of buoyancy metacentre liquid surface
Answer Explanation

MCQs 18: A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?

900 minutes 4 minutes 4 x (225)3/2 minutes 4 (225)1/3 minutes 4 x V225 minutes
Answer Explanation

MCQs 19: For a floating body to be in stable equilibrium, its metacentre should be_________________ ?

below the center of gravity below the center of buoyancy above the center of buoyancy between e.g. and center of pressure above the center of gravity
Answer Explanation

MCQs 20: A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?

1 : 5 1 : 2.5 1 :25 1:V5″ 1 : 53/2
Answer Explanation

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