## In a forced vortex, the velocity of flow everywhere within the fluid is__________________?

In a forced vortex, the velocity of flow everywhere within the fluid is__________________?

A. maximum
B. minimum
C. zero
D. non-zero finite
E. unpredictable

## Two pipe systems can be said to be equivalent, when the following quantites are same______________?

Two pipe systems can be said to be equivalent, when the following quantites are same______________?

A. friction loss and flow
B. length and diameter
C. flow and length
D. friction factor and diameter
E. velocity and diameter

## At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be_______________?

At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be_______________?

A. minimum
B. maximum
C. zero
D. negative value
E. could be any value

## For pipes, laminar flow occurs when Roynolds number is__________________?

For pipes, laminar flow occurs when Roynolds number is__________________?

A. less than 2000
B. between 2000 and 4000
C. more than 4000
D. less than 4000
E. none of the above

## The fluid forces considered in the Navier Stokes equation are__________________?

The fluid forces considered in the Navier Stokes equation are__________________?

A. gravity, pressure and viscous
B. gravity, pressure and turbulent
C. pressure, viscous and turbulent
D. gravity, viscous and turbulent
E. none of the above

## All the terms of energy in Bernoulli’s equation have dimension of_______________?

All the terms of energy in Bernoulli’s equation have dimension of_______________?

A. energy
B. work
C. mass
D. length
E. time

## Two dimensional flow occurs when___________________?

Two dimensional flow occurs when___________________?

A. the direction and magnitude of the velocity at all points are identical
B. the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
C. the magnitude and direction of the velocity do not change from point to point in the fluid
D. the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
E. velocity, depth, pressure, etc. change from point to point in the fluid flow

## For hypersonic flow, the Mach number is___________________?

For hypersonic flow, the Mach number is___________________?

A. unity
B. greater than unity
C. greater than 2
D. greater than 4
E. greater than 10

## Normal depth in open channel flow is the depth of flow corresponding to_______________?

Normal depth in open channel flow is the depth of flow corresponding to_______________?