Understand the pressure, force and flow of water

Quiz by Ricky Fleet

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24 questions
• Q1
Which of the following pipes, each measuring 6m in length, will offer the greatest resistance to the flow of water?
15mm pipe with two machine bends and two elbows
15mm pipe with four machine bends
15mm pipe with four elbows
22mm pipe, which reduces down to 15mm halfway along its length
30s
• Q2
What is the intensity of pressure acting at the base of a 7m long pipe, which has a head height of 3 meters (the cistern at the head of this pipe measures 500mm x 500mm x 500mm)?
32.49kPa
24.67kPa
19.81kPa
29.43kPa
30s
• Q3
Which of the following will cause siphonage to occur?
Suction at point C
Suction at point A
Atmospheric pressure in the tube
Increase in pressure at point B
30s
• Q4
With a downward pressure of 100kPa and a head of 10m, what would be the approximate pressure in bar?
50 bar
1 bar
100 bar
10 bar
30s
• Q5
One meter head of pressure is roughly equal to...
1 Bar
0.1 Bar
0.00001 Bar
10 Bar
30s
• Q6
On the image which point would experience the lowest pressure?
Point D
Point C
Point A
Point B
30s
• Q7
On the image which point would experience the highest pressure?
Point A
Point B
Point C
Point D
30s
• Q8
If a tank (dimensions 500mm x 1000mm) had a static head of pressure of 5m which calculation shows the intensity of pressure at the base of the pipe?
5m x 1000mm x 9.81Kn/m³
500mm x 1000mm x 9.81Kn/m³
500mm x 1000mm
5m x 9.81Kn/m³
30s
• Q9
Pipework fittings such as elbows, will most likely...
Stop flow rates
Maintain flow rates
Increase flow rates
Decrease flow rates
30s
• Q10
Which one of the following terms best describes the principles of velocity?
The rate at which an object changes its position
The amount of fluid that flows through a pipe
The volume of water flowing through a duct
The force acting upon a surface
30s
• Q11
The following image shows siphonic action. Which of the following is required for the action to occur?
Low atmospheric pressure in the upper beaker
High static pressure in the lower beaker
Gravity and the cohesive nature of water
30s
• Q12
What unit below is used for measuring temperature?
Inches
Second
Kilograms
Kelvin
30s
• Q13
The SI unit for pascal (pressure) is?
Nm2
Pasc
P2a
Pa
30s
• Q14
What is the International si unit of force?
Pa
Bar
Kj
N
30s
• Q15
Which calculation do we use to measure gravity?
Divide by 9.81 m/s2
Divide by 0.981 m/s2
Multiply by 0.981 m/s2
Multiply by 9.81 m/s2
30s

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