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Hot Water Systems 1.7 Quiz

Authored by Daniel Edwards

Physics

Professional Development

Used 1+ times

Hot Water Systems 1.7 Quiz
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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main cause of unwanted ticking and creaking noises in hot water systems?

Chemical reactions

Temperature fluctuations

Water pressure variations

Expansion and contraction of pipework

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the coefficient of thermal linear expansion for plastic pipe?

0.00018m/m/oC

0.000016m/m/oC

0.00020m/m/oC

0.00015m/m/oC

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of pipe material expands more than copper or steel?

Steel

Polybutylene

Cross-linked polyethylene

Copper

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the expansion in a 20m run of plastic pipe with a temperature variation of 65oC?

0.23m or 230mm

0.03m or 30mm

0.18m or 180mm

0.16m or 160mm

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Expanding and contracting pipework can create what?

Corrosion in the pipework

Reduced pipe flexibility

Increased water pressure

Unwanted ticking and creaking noises

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