Fluid Mechanics MCQs

Froude number

Kinematic viscosity

Pressure co-efficient

None of these

Above

Below

At

Either above or below; depends on the liquid density

0.5

1

1.5

2

Fixed in space in steady flow

Always the path of particle

Drawn normal to the velocity vector at every point

A line connecting the mid points of flow cross-section

Keep the pipe in proper orientation

Make the pipe joint leak-proof

Account for contraction/expansion of pipe due to temperature changes of the surroundings

Account for the pressure variation side the pipeline

Speed of

Diameter of

Fluid velocity leaving

All of the above

More

Less

Same

Unpredictable

Develops a lower head

Capacity is reduced

Requires more power

All of the above

20 m/sec

10 m/sec

5√2 m/sec

5 m/sec

Its capacity varies directly as the square of speed

Head varies as the square of speed

Horsepower input varies as the square of speed

Head varies as the speed