🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs461
The equation of continuity holds good when the flow __________________?
Ais steady
Bis one dimensional
Cvelocity is uniform at all the cross sec-tions
Dall of the above E. none of the above
462
Froude 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
463
The time oscillation of a floating body with increase in metacentric height will be________________?
Asame
Bhigher
Clower
Dlower/higher depending on weight of body E. unpredictable
464
In an immersed body, center of pressure is ____________________?
Aat the center of gravity
Babove the center of gravity
Cbelow be center of gravity
Dcould be above or below e.g. depending on density of body and liquid E. unpredictable
465
The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be ___________________?
A2 meters of water column
B3 meters of water column
C3.5 meters of water column
D4 m of water column E. none of the above
466
The line of action of the buoyant force acts through the centroid of the ___________________?
Asubmerged body
Bvolume of the floating body
Cvolume of the fluid vertically above the body
Ddisplaced volume of the fluid E. none of the above
467
In a forced vortex, the velocity of flow everywhere within the fluid is__________________?
Amaximum
Bminimum
Czero
Dnon-zero finite E. unpredictable
468
Two pipe systems can be said to be equivalent, when the following quantites are same______________?
Afriction loss and flow
Blength and diameter
Cflow and length
Dfriction factor and diameter E. velocity and diameter
469
At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be_______________?
Aminimum
Bmaximum
Czero
Dnegative value E. could be any value
470
For pipes, laminar flow occurs when Roynolds number is__________________?
Aless than 2000
Bbetween 2000 and 4000
Cmore than 4000
Dless than 4000 E. none of the above