Civil Engineering MCQs

Page No. 9

The horizontal component of buoyant force is__________________?


anegligible


bsame as buoyant force


czero


dnone of these


View Answer zero

Center of buoyancy is the___________________?


acentroid of the displaced volume of fluid


b center of pressure of displaced volume


ce.g. of floating ‘body


d does not exist



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


a1


b 5


c 7


d 6


View Answer 6

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


aupthrust


breaction


cbuoyancy


dmetacentre


View Answer buoyancy

Centre of pressure compared to e.g. is______________?


aabove it


b below it


cat same point


dabove or below depending on area of body


View Answer below it

The center of pressure of a surface subjected to fluid pressure is the point____________________?


aon the surface at which resultant pres-sure acts


bon the surface at which gravitational force acis


cat which all hydraulic forces meet


d similar to metacentre



Metacentric height is the distance between the metacentre and___________________?


awater surface


bcenter of pressure


c center of gravity


dcenter of buoyancy


View Answer center of gravity

The resultant of all normal pressures acts_________________?


aat e.g. of body


bat center of pressure


c vertically upwards


dat metacentre


View Answer vertically upwards

In order to increase sensitivity of U-tube manometer, one leg is usually inclined by angle 9. Sensitivity of inclined tube to sensitivity of U-tube is equal to_________________?


acasS


bsin 9


ccos 9


d tan 9


View Answer sin 9

Which of the following manometer has highest sensitivity __________________?


aU-tube with water


b inclined U-tube


c U-tube with mercury


d micro-manometer with water



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