9189PH2CHPPT8

9189PH2CHPPT8

12th Grade

23 Qs

quiz-placeholder

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9189PH2CHPPT8

9189PH2CHPPT8

Assessment

Quiz

Physics

12th Grade

Hard

Created by

William Heron

FREE Resource

23 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is the primary purpose of a pressure relief valve in a plumbing system?

To increase water pressure

To protect against over-pressurisation of the water

To reduce water temperature

To filter impurities.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Pressure relief valves are usually set to ___ bar pressure.

1

2

3

4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one reason why a pressure relief valve might open?

The diaphragm in the expansion vessel has ruptured

The vessel is overfilled with air

The discharge pipework is plastic

The system is too cold.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Fill in the blank: Pressure relief valves are most likely to open because of a lack of room in the system for expansion, due to a malfunction with the ________.

discharge pipework

expansion vessel

heating element

water supply

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is the primary function of an Automatic Air Vent (AAV) in a heating system?

To increase water pressure

To release trapped air

To heat the water

To cool the system.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Trapped air within heating systems can cause several problems. Which of the following is NOT one of them?

A) Air leads to corrosion

B) Lack of circulation through airlocks

C) Air in radiators leads to inefficiency

D) Decreased water temperature.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is the primary function of a mechanical cylinder thermostat?

To control the temperature of a hot water cylinder

To increase water pressure

To filter impurities

To reduce noise

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