Education Questionnaire

Training in Copper Systems

This is just a selection of the problems posed in Make The Next Step. To test your skills further and work towards gaining a City and Guilds qualification in Industrial and Commercial Copper Tube Installation, please contact Brian Curry for further details.

Why not try some of the questions below.

1. The minimum melting point of filler rods for brazing is?

A

400oC

B

500oC

C

1000oC

D

100oC

 

2.  One of the three important conditions for successful brazing is?

A

A piece of metal pipe and filler rod

B

The correct type of bronze welding rod for the joint

C

A correct capillary gap of 5 mm

D

A dry chemically clean metal surface, free from grease and oxide

 

3.  What is the typical brazing gap used for silver solder?

A.

0.005 and 0.02 mm

B.

5 mm and 20 mm

C.

0.05 and 10 mm

D.

0.05 and 0.20 mm

 

4.  When forming 90o machine bends you should allow an extra:

A.

1.5 times the tube diameter

B.

2 times the tube diameter

C.

4 times the tube diameter

D.

No extra allowance is needed

 

5.  The single line drawing shown is an example of a:

line_symbol.gif

A.

'P' trap

B.

Cross over tee

C.

Expansion branch

D.

Double looped joint

 

6.  The factors to be considered for correct tube sizing are:

A.

Flow rate required, type of water hard or soft, gradient of pipe

B.

Type of copper used, length of tube, number of fittings

C.

Type of water hard or soft, flow rate required, clip distances

D.

Flow rate required, pressure available, length of tube, number of fittings

Click here for the answers

For further information on Make The Next Step, please contact Brian Curry.

 

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