SSC JE Mechanical Engineering 4th March 2017 Shift-1

increases

decreases

remains unaffected

unpredictable

at c.g. of body

at centre of pressure

vertically upwards

at metacentre

when its metacentric height is zero

when the metacentre is above c.g.

when its c.g. is below its centre of buoyancy

metacentre has nothing to do with position of c.g. for determining stability

vertical upward force through c.g. of body and center line of body

buoyant force and the center line of body

mid-point between c.g. and center of buoyancy

All of these

buoyancy, gravity

buoyancy, pressure

buoyancy, inertial

inertial, gravity

only when the fluid is frictionless

only when the fluid is incompressible and has zero viscosity

when there is no motion of one fluid layer relative to an adjacent layer

irrespective of the motion of one fluid layer relative to an adjacent layer

Pascal law

Newton's law of viscosity

boundary layer theory

continuity equation

one dimensional flow

uniform flow

steady flow

turbulent flow

the direction and magnitude of the velocity at all points are identical

the velocity of successive fluid particles, at any point, is the same at successive periods of time

the magnitude and direction of the velocity do not change from point to point in the fluid

the fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

crest

nappe

sill

weir top