Flow in Pipes

Unit of 'head' in a pipeline system is

• meter

• kilogram

• second

• Pascal

Three heads in Bernoulli's equation are (can be more than one answer)

• elevation head

• length head

• velocity head

• pressure head

Head loss due to enlargement occurs when the fluid flow from a

• larger diameter to smaller diameter

• smaller diameter to larger diameter

• pipe to reservoir

• pipe to atmosphere

Major loss in a pipeline is due to

• friction

• pipe enlargement

• pipe contraction

• pipe fitting

Losses of head occurred in the pipeline system as shown in the figure are

• entrance + contraction + enlargement + exit

• friction 1 + friction 2 + friction 3

• entrance + friction 1 + contraction + friction 2 + enlargement + friction 3 + exit

• no head loss

Method used to analyse closed loop pipes is

• Quantity Balanced Method

• Pipe in Series Method

• Pipe in Parallel Method

• Hardy Cross Method

Method used to analyse branching pipes is

• Quantity Balanced Method

• Hardy Cross Method

• Pipe in Series Method

• Pipe in Parallel Method

In Hardy Cross Method, the direction of flow is assume to be

• to the left

• upward

• anticlockwise

• clockwise

Junction in a closed loop pipeline system is known as a

• node

• pipe

• loop

• point

1 L/s is equals to

• $1\ \frac{m^3}{s}$

• $1000\ \frac{m^3}{s}$

• $0.001\ \frac{m^3}{s}$

• $100\ \frac{m^3}{s}$