SSC JE Mechanical Engineering 4th March 2017 Shift-1

straight line law

parabolic law

hyperbolic law

logarithmic law or Power law

varies as the square of the radial distance

decreases as the square of the radial distance

increases linearly as the radial distance

varies inversely as the elevation along any vertical line

length of pipe

elastic properties of pipe material

rate of stoppage of flow

All options are correct

one-half of the total head supplied

one-third of the total head supplied

one-fourth of the total head supplied

equal to the total head supplied

d = D/n

d = D/n1/2

d = D/n3/2

d = D/n2/5

density of fluid

velocity

pressure

surface roughness

flow through an expanding tube at an increasing rate

flow through an expanding tube at constant rate

flow through a long pipe at decreasing rate

flow through a long pipe at constant rate

the difference in elevation of water surface

the square root of the difference in elevation of water surface

the square root of the area of the opening

reciprocal of the area of the opening

the shear stresses are generally larger than in a similar laminar flow

fluid particles move in an orderly manner

momentum transfer is on a molecular scale only

cohesion is more effective than momentum transfer in causing shear stress

is constant over the cross-section

is zero at the wall and increases linearly to the center

is zero at the center and varies linearly with radius

varies parabolically across the section