Force & Pressure Quiz L3p2 U3,4.2

Which material offers the least resistance to the flow of water?

• Plastics

• Low Carbon Steel

• Copper tubes

• Machine made bends

What is the equivalent resistance of an elbow in terms of pipe length?

• 0.5m

• 2m

• 1m

• 1.5m

How does the length of the pipe affect the flow rate?

• Increases the flow rate

• Decreases the flow rate

• Has no effect on the flow rate

• Increases the pressure

What happens to the pressure and flow rate when there are restrictions such as valves and stop taps?

• Decreases the pressure and flow rate

• Increases the pressure and flow rate

• Increases the pressure and decreases the flow rate

• Has no effect on the pressure and flow rate

What is the effect of pipe size on the volume of water or gas?

• Increases the volume

• Has no effect on the volume

• Decreases the volume

• Increases the pressure

Which of the following reduces the pressure and flow rate but increases the velocity?

• Material of the pipe

• Length of pipe run

• Pipe size reduction

• Changes of direction

Which material offers the most resistance to the flow of water?

• Low Carbon Steel

• Machine made bends

• Copper tubes

• Plastics

What is the equivalent resistance of a machine made bend in terms of pipe length?

• 0.1m

• 0.2m

• 0.4m

• 0.3m

How does the number of changes of direction affect the flow rate?

• Has no effect on the flow rate

• Decreases the flow rate

• Increases the pressure

• Increases the flow rate

What is the effect of pipe length on the resistance encountered?

• Increases the pressure

• Has no effect on the resistance

• Decreases the resistance

• Increases the resistance