Graded A+
Question 01: Water Regulations and which BS number are fundamental to the
design and operation of cold and hot water systems?
A BS 7600
B BS 0760
C BS 6700
D BS 0076 - Correct answer-You said BS 6700 (C), which is correct. Water
Regulations, together with BS 6700 are fundamental to the design and operation of
cold and hot water systems.
Question 02: Acetal is used in the manufacturing of which fitting?
A Chrome tap
B Brass tap
C Rubber tap
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, D Plastic tap - Correct answer-The right answer is Plastic tap (D), as you selected.
Plastic taps and valves are available. These are manufactured from thermosetting
plastic called acetal.
Question 03: Water Regulations require that the cold water supply pipe from the
CWSC to tap outlets and the hot water storage vessel be isolated with what?
A Full bore gate valve
B Double check valve
C Stop valve with combined drain tap
D Angle type valve - Correct answer-You said Full bore gate valve (A), which is
correct. When a plumber carries out maintenance on the indirect cold water or hot
water supply system, turning off the valve will isolate the supply and avoid the
need to drain down all the water in the CWSC, thus preventing the waste of water.
Question 04: A customer reported a dripping kitchen tap you replaced the washer
but the tap still drips. What else could you try doing before replacing the tap?
A Turn the pressure down
B Re-seat the tap
C Grease the spindle
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