🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs451
Resultant pressure of the liquid in the case of an immersed body acts through _________________?
Acenter of gravity
Bcenter of pressure
Cmetacentre
Dcenter of buoyancy E. in between e.g. and center of pressure
452
The two important forces for a floating body are___________________?
Abuoyancy, gravity
Bbuoyancy, pressure
Cbuoyancy, inertial
Dinertial, gravity E. gravity, pressure
453
Center of pressure on an inclined plane is______________________?
Aat the centroid
Babove the centroid
Cbelow the centroid
Dat metacentre E. at center of pressure
454
An open vessel of water is accelerated up an inclined plane. The free water surface will___________________?
Abe horizontal
Bmake an angle in direction of inclination of inclined plane
Cmake an angle in opposite direction to inclination of inclined plane
Dany one of above is possible E. none of the above
455
For a floating body to be in equilibrium __________________?
Ameta center should be above e.g.
Bcenter of buoyancy and e.g. must lie on same vertical plane
Ca righting couple should be formed
Dall of the above E. none of the above
456
Ratio of inertia force to elastic force is known as _____________________?
AMach number
BFroude number
CReynold’s number
DWeber’s number E. none of the above
457
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 ?
A10 m/sec
B25 m/sec
C2 m/sec
D50 m/sec E. 250 m/sec
458
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 ?
A1 : 5
B1 : 2.5
C1 :25
D1:V5″ E. 1 : 53/2
459
Mach number is significant in___________________?
Asupersonics, as with projectiles and jet propulsion
Bfull immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.
Csimultaneous motion through two fluids where there is a surface of dis-continuity, gravity force, and wave making effects, as with ship’s hulls
Dall of fhe above E. none of the above
460
According to Bernoulli’s equation for steady ideal fluid flow_______________?
Aprinciple of conservation of mass holds
Bvelocity and pressure are inversely proportional
Ctotal energy is constant throughout
Dthe energy is constant along a stream-line but may vary across streamlines E. none of the above