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MTL2 Cold Water Mock Test

Total questions: 40

Worksheet time: 20mins

Name
Class
Date
1.

Which of the following types of water source is most likely to be used for the provision of a private water supply?

a)

River

b)

Reservoir

c)

Bore-hole

d)

Mains water supply

2.

Harvested rainwater should not be used for:

a)

Washing clothes

b)

Watering the garden

c)

Flushing toilets

d)

Drinking

3.

What the minimum and maximum depth of cover for a cold water supply pipe?

a)

450mm-1350mm

b)

600mm-1100mm

c)

750mm-1350mm

d)

900mm-1100mm

4.

What size of pipe is normally used to feed an indirect cold water system from the cold water storage cistern?

a)

15mm

b)

22mm

c)

28mm

d)

35mm

5.

What type of backflow into the cold mains supply is caused by the expansion of water?

a)

Back siphonage

b)

Reverse pressure

c)

Back pressure

d)

Reverse flow

6.

The backflow prevention method used for the appliance in the picture is a:

a)

Double check valve

b)

Air gap

c)

Non-return valve

d)

Break tank

7.

What is the name of component with the empty arrow of this BS1212 part 2 float operated valve?

a)

Water inlet

b)

Lever arm

c)

Water outlet

d)

Diaphragm

8.

If a direct cold supply water system is to be used, what must the property have?

a)

Cold water storage cistern

b)

High level service valve

c)

An adequate incoming supply pressure

d)

Overflow pipe

9.

Which of the following should be used where cold water pipes pass through a wall?

a)

Pipe sleeve

b)

Insulation

c)

Wall plug

d)

Grommet

10.

What hand tool is shown in the picture?

a)

Pipe wrench

b)

Adjustable spanner

c)

Pump pliers

d)

Water pump

11.

What is the name of this measuring device?

a)

Flow gauge

b)

Pressure gauge

c)

Weir gauge

d)

Level gauge

12.

On a cold water storage cistern, where should the outlet be positioned?

a)

From the base of the cistern

b)

From the top

c)

From the side

d)

From the overflow

13.

What must be used to reinforce the fitting of a float operated valve on a plastic storage cistern?

a)

Back plate

b)

Support bracket

c)

Washer

d)

Gasket

14.

In which of the following types of structure is it possible to embed cold water pipes in chases?

a)

Internal wall

b)

Timber floor

c)

External wall

d)

Roof space

15.

Which of the following must be installed on the cold water supply pipe to a WC cistern?

a)

Stopcock

b)

Drain valve

c)

Service valve

d)

Check valve

16.

It is necessary to insulate a cold water storage cistern installed in a heated space to prevent:

a)

Freezing

b)

Heat absorption

c)

Condensation

d)

Pressure loss

17.

What documentation would contain maintenance information for a water softener?

a)

Installation certificate

b)

User guide

c)

Manufacturer’s servicing instructions

d)

Building regulations

18.

What steps should be taken to check the operation of a double check valve on a cold water supply system as part of a periodic maintenance inspection?

a)

Test the inlet pressure

b)

Remove and clean the valve

c)

Replace both check valves

d)

All of the above

19.

During a routine inspection a plastic cold water storage cistern is found to be supported on two ceiling joists. What remedial action is needed?

a)

Add insulation

b)

Fully support the cistern base

c)

Fit a larger overflow

d)

Replace the cistern

20.

Which of the following items of information is required on a maintenance record for terminal fittings on cold water systems?

a)

Date installed

b)

Maintenance activities carried out

c)

Manufacturer’s name

d)

Installer’s name

21.

A working method which can help to save time during work to renew cold water systems pipework and draw-off fittings is:

a)

Pre-fabrication

b)

Insulation

c)

Prefilling

d)

Commissioning

22.

Which document should be given to the plumber to enable them to identify what part of a cold water system is to be decommissioned?

a)

Work instruction

b)

Risk assessment

c)

Specification

d)

Permit to work

23.

Which two components are used to temporarily decommission sections of cold water installations?

a)

Isolation and stop valves

b)

Stop and drain valves

c)

Service and drain valves

d)

Gate and check valves

24.

Which of the following actions must be undertaken first when permanently decommissioning cold water supply pipework?

a)

Drain the system

b)

Isolate the incoming supply

c)

Remove terminal fittings

d)

Label the system

25.

Prior to filling a cold water system with water for testing, checks should be made to ensure that:

a)

All valves are closed

b)

Pipework is adequately supported

c)

The cistern is filled

d)

The test gauge is fitted

26.

Which of the following steps must be taken prior to the initial filling of a cold water system for the purpose of leak testing?

a)

Carry out a visual inspection of the system

b)

Flush the pipework

c)

Fill the cistern

d)

Open all valves

27.

Which type of pipe material should be tested for soundness at 1.5 times the normal operating pressure without loss of pressure?

a)

Plastic

b)

Flexible

c)

Rigid

d)

Composite

28.

Cold water systems must be flushed with cold water following the completion of:

a)

New installations

b)

Repairs

c)

Alterations

d)

All work activities

29.

What action should be taken when pipework support bracketing is defective?

a)

Tighten the screws

b)

Replace the damaged brackets

c)

Add insulation

d)

Reposition supports

30.

The cover of a cold water storage cistern must provide adequate protection against:

a)

Heat and light

b)

Dust and air

c)

Light and insects

d)

Water vapour

31.

What is the component shown ?

a)

Non-return valve

b)

Double check valve

c)

Backflow preventer

d)

Service valve

32.

What component(s) makes connecting water supply pipes to pedestal wash basins easier?

a)

Copper tails

b)

Flexible hoses

c)

Plastic pipe

d)

Compression joints

33.

A BS1212 type 2 float operated valve in a cold water storage cistern is causing the warning pipe to continually overflow. Which of the following remedial work tasks is required?

a)

Replace the diaphragm

b)

Replace the float

c)

Adjust the lever

d)

Fit a new washer

34.

If the water mixes in the body of a mixer tap, what must be provided to protect the cold supply from risk of backflow?

a)

Break tank

b)

Air gap

c)

Double check valve

d)

Non-return valve

35.

Which water treatment process involves adding a chemical coagulant to bind particles together and remove colour, turbidity, and algae?

a)

Sedimentation

b)

Filtration

c)

Flocculation

d)

Chlorination

36.

What is the clipping distance for 22mm copper pipe?

a)

1.2m Horizontal

1.8m Vertical

b)

1.2m Horizontal

2.4m Vertical

c)

1.8m Horizontal

2.4m Vertical

d)

0.8m Horizontal

1.2m Vertical

37.

What is the clipping distance for 15mm copper pipe?

a)

1.2m Horizontal

1.8m Vertical

b)

1.8m Horizontal

2.4m Vertical

c)

1.2m Horizontal

2.4m Vertical

d)

0.8m Horizontal

1.2m Vertical

38.

What is the maximum depth allowed for a notch in a joist that is 200mm deep?

a)

25mm

b)

37.5mm

c)

75mm

d)

12.5mm

39.

According to Building Regulations Part A, what is the maximum depth a joist can be notched to?

a)

1/4

b)

1/6

c)

1/8

d)

2/8

40.

According to Building Regulations Part A, To work out the maximum diameter of a hole you can drill in the joist you divide the depth of the joist by what measurement ?

a)

1/4

b)

1/6

c)

1/8

d)

2/8