The Reynolds number for flow of 0.3 m3/s of oil sp. Gr. 0.86,
A.29.2
B.292
C.2920
D.22930
E.None of the above
Category: Fluid Mechanics and Hydraulic Machines Mcqs
The line of action of the buoyant force acts through the
A.Centre of gravity of any submerged body
B.Centroid of gravity of any floating body
C.Centroid of the displaced volume of fluid
D.Centroid of the volume of fluid vertically above the body
E.Centroid of the horizontal projection of the body
When power is transmitted through a considerable distance by means of water under pressure, the maximum power is transmitted when
A.Frictional loss of head is one third of the total head supplied
B.Frictional loss of head is half of the total head supplied
C.Frictional loss of head is 10% of the total head
D.Eficiency of transmission is 75%
E.Loss in transmission is 17.7%.
In above problem, what will be the horse power required to drive the pump?
A.1000
B.1450
C.1570
D.1670
E.1900
The oscillatory motion of a ship or a boat about its longitudinal axis is designated as
A.Vibration
B.Simple harmonic motion
C.Rolling
D.Pitching
E.Gyro-mtion
The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is
A.constant over the cross-section
B.maximum at the mid-plane and varies linearly wth distance from mid-plane
C.zero at the mid-point and varies linearly with distance from mid-plane
D.zero at the plates and varies exponentially to mid-point
The result of pressure of a liquid on the wetted surface of a rigid body is
A.The single force which, acting at a point on that surface would produce the same effect on the body as the liquid pressure on it
B.The single resultant force acting on the body
C.The point where vertical component of resulting force is zero
D.The single point where resultant horizontal force is zero
E.None of the above
In a Buttress dam the inclination of the deck with horizontal is kept between
A.10? to 15?
B.15? to 20?
C.25? to 30?
D.35? to 40?
E.60? to 75?
A concrete masonry block on a hill side for supporting and fixing the penstock is known as
A.Anchor block
B.Support block
C.Concrete block
D.Base block
E.Any of the above
