🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs441
For a floating body to be in stable equilibrium, its metacentre should be_________________ ?
Abelow the center of gravity
Bbelow the center of buoyancy
Cabove the center of buoyancy
Dbetween e.g. and center of pressure E. above the center of gravity
442
A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?
A900 minutes
B4 minutes
C4 x (225)3/2 minutes
D4 (225)1/3 minutes E. 4 x V225 minutes
443
When a body floating in a liquid, is displaced slightly, it oscillates about ___________________?
Ae.g. of body
Bcenter of pressure
Ccenter of buoyancy
Dmetacentre E. liquid surface
444
Ratio of inertia force to surface Jension is known as ________________________?
AMach number
BFroude number
CReynold’s number
DWeber’s number E. none of the above
445
Buoyant force is___________________?
Aresultant force acting on a floating body
Bequal to the volume of liquid displaced
Cforce necessary to keep a body in equilibrium
Dthe resultant force on a body due to the fluid surrounding it E. none of the above
446
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to __________________?
Athe weight of the body
Bmore than the weight of the body
Cless than the weight of the body
Dweight of the fluid displaced by the body E. weight of body plus the weight of the fluid displaced hy the body
447
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 E. all of the above
448
Reynolds number is significant in____________________?
Asupersonics, as with projectile 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 forces, and wave making effect, as with ship’s hulls
Dall of the above E. none of the above
449
A large Roynold number is indication of_________________?
Asmooth and streamline flow
Blaminar flow
Csteady flow
Dturbulent flow E. highly turbulent flow
450
Differential monometer is used to measure _______________________?
Apressure in pipes, channels etc.
Batmospheric pressure
Cvery low pressure
Ddifference of pressure between two points E. velocity in pipes