Equation of continuity

The speed of fluid increases with

• decrease of area of pipe

• increases of area of pipe

• increase of pressure

• None of these

The pressure of moving fluid has greater value at

• less area of cross section

• large area of cross section

• anywhere

Moving fluid through a pipe has more pressure, if

• the stream lines are widened

• stream lines are parallel

• stream lines are crowded

• None of these

The assumption made for relating area of cross section of pipe and speed of fluid is that

• the fluid is a viscous fluid

• the fluid is a compressible fluid

• the fluid is a Non-viscous fluid,

• the fluid is a incompressible fluid

volume of liquid flowing per unit time is

• a constant

• increases with area of cross section

• decreases with area of cross section

• None of these

Mass of liquid flowing per unit time is

• Non of these

• A constant

• increases with area of cross section

• decreases with area of cross section

Mathematical equation of continuity is expressed as.......

• a1a2 = v1v2

• a1/v2 = a2/v1

• v2/a1 = v1/a2

• a1v1=a2v2

Water emerges from a horizontal pipe of varying cross section. If it enters to the pipe with a velocity 0.2 m/s where the area of cross section is 0.5 m^2 and leaves at the end of pipe having area of cross section 0.2 m^2, what is the velocity of water coming out of the pipe?

• 0.2 m/s

• 0.5 m/s

• 0.4 m/s

• 0.25 m/s