Hot Water PowerPoint 4
Authored by Stuart Field
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22 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the effect of increasing the head height in a gravity-fed hot water system?
It decreases the pressure.
It increases the pressure.
It decreases the flow rate.
It has no effect.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when a hot tap is opened in a gravity-fed hot water system?
Cold water is pushed up into the hot water cylinder.
Hot water is pushed down into the cold water storage.
Cold water is pushed down into the hot water cylinder.
Hot water is pushed up into the cold water storage.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the diameter of the pipe affect the flow rate in a gravity-fed hot water system?
A larger diameter decreases the flow rate.
A larger diameter increases the flow rate.
A larger diameter has no effect on the flow rate.
A larger diameter decreases the pressure.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of positioning the cold feed above the cold distribution in a CWSC system?
To ensure the system refills with water if the valve fails.
To allow hot water to flow continuously.
To prevent the system from overheating.
To increase water pressure in the system.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why should all pipes be laid with a slight fall in a CWSC system?
To increase water pressure.
To prevent airlocks within the system.
To reduce water temperature.
To enhance water flow speed.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of valve must be installed just prior to the float operated valve on a rising main to the CWSC?
Ball valve
Service valve
Check valve
Pressure relief valve
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why must a fullway gate valve be used on the cold feed pipe?
It is a high pressure system
It is a low pressure system
It is a medium pressure system
It is a variable pressure system
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