The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if___________________?

A. The area is horizontal
B. The area is vertical
C. The area is inclined
D. All of the above

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

A. The weight of the body
B. More than the weight of the body
C. Less than the weight of the body
D. Weight of the fluid displaced by the body

For a body floating in a liquid the normal pressure exerted by the liquid acts at ____________________?

A. Bottom surface of the body
B. E.g. of the body
C. Metacentre
D. All points on the surface of the body

A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?

A. 10 m/sec
B. 25 m/sec
C. 2 m/sec
D. 50 m/sec

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 ?

A. 1 : 5
B. 1 : 2.5
C. 1 :25
D. 1:v5″

For a floating body to be in stable equilibrium, its metacentre should be___________________?

A. below the center of gravity
B. below the center of buoyancy
C. above the center of buoyancy
D. between e.g. and center of pressure

Center of pressure on an inclined plane is___________________?

A. At the centroid
B. Above the centroid
C. Below the centroid
D. At metacentre

The two important forces for a floating body are__________________?

A. Buoyancy, gravity
B. Buoyancy, pressure
C. Buoyancy, inertial
D. Inertial, gravity

The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be __________________?

A. 2 metres of water column
B. 3 metres of water column
C. 3.5 metres of water column
D. 4 m of water column

The centre of gravity of the volume of the liquid displaced by an immersed body is called ___________________?

A. Centre of gravity
B. Centre of pressure
C. Metacentre
D. Centre of buoyancy