Civil Engineering MCQs

Page No. 8

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


aMach number


bFroude number


cReynold’s number


d Weber’s number


View Answer Weber’s number

Buoyant force is___________________?


a resultant force acting on a floating body


bequal to the volume of liquid displaced


cforce necessary to keep a body in equilibrium


d the resultant force on a body due to the fluid surrounding it



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


bmore 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 _________________?


abottom surface of the body


be.g. of the body


cmetacentre


dall points on the surface of the body



Metacentre is the point of intersection of _________________________?


avertical upward force through e.g. of body and center line of body


bbuoyant force and the center line of body


cmid point between e.g. and center of buoyancy


dall of the above



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 ______________________?


a 2.4 m


b3.0 m


c4.0 m


d”2.5 m


View Answer 3.0 m

Choose the wrong statement___________________?


a The horizontal component of the hydro-static force on any surface is equal to the normal force on the vertical projection of the surface


b The horizontal component acts through the center of pressure for the vertical projection


cThe vertical component of the hydrostatic force on any surface is equal to the weight of the volume of the liquid above the area


dhe vertical component passes through the center of pressure of the volume



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 _____________________?


a2 meters of water column


b3 meters of water column


c 5 meters of water column


d6 meters of water Column



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 __________________?


a9,000 kg


b13,500 kg


c18,000 kg


d27,000 kg


View Answer 13,500 kg

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


cthe area is inclined


dall of the above


View Answer all of the above

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