🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs391
Center of buoyancy is the___________________?
Acentroid of the displaced volume of fluid
Bcenter of pressure of displaced volume
Ce.g. of floating ‘body
Ddoes not exist E. none of the above
392
A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is__________________?
A1
B5
C7
D6
393
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 E. center of pressure
394
Centre of pressure compared to e.g. is______________?
Aabove it
Bbelow it
Cat same point
Dabove or below depending on area of body E. none of the above
395
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
Dsimilar to metacentre E. where pressure equivalent to hydraulic thrust will act
396
Metacentric height is the distance between the metacentre and___________________?
Awater surface
Bcenter of pressure
Ccenter of gravity
Dcenter of buoyancy E. none of the above
397
The resultant of all normal pressures acts_________________?
Aat e.g. of body
Bat center of pressure
Cvertically upwards
Dat metacentre E. vertically downwards
398
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 E. none of the above
399
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 ______________________?
A2.4 m
B3.0 m
C4.0 m
D”2.5 m E. 5.0 m
400
Choose the wrong statement___________________?
AThe horizontal component of the hydro-static force on any surface is equal to the normal force on the vertical projection of the surface
BThe 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 E. Center of pressure acts at a greater depth than center of gravity