Worksheets6189 Plumbing and Water Systems Quiz
Total questions: 20
Worksheet time: 10mins
At which one of the following temperature ranges should hot water be stored?
30% – 35%
40% – 45%
50% – 55%
60% – 65%
Which one of the following is the minimum size of an open vent pipe from a hot water cylinder?
15 mm
22 mm
28 mm
35 mm
Which one of the following component parts is installed after the incoming stop valve?
Drain off
Air vent
By-pass valve
Water meter
Which one of the following is the maximum depth a water main service should be laid?
750 mm
1000 mm
1350 mm
1650 mm
To ensure correct operation, a single feed indirect cylinder requires which one of the following to be formed?
A heat exchanger
An air bubble
An annulus
A flute
Which one of the following is used by gravity primary pipework to circulate the water?
A circulating pump.
Conduction.
Radiation.
Convection.
Which one of the following is the minimum distance the distribution pipe from the cylinder should be installed horizontally before it connects to the open vent pipe?
450 mm.
750 mm.
1350 mm.
1650 mm.
Installing which one of the following would overcome problems caused by long pipework runs?
A primary circuit.
A heating circuit.
A secondary circuit.
A gravity circuit.
Stratification is most likely to take place in a
cold water storage cistern
feed and expansion cistern
float operated valve
hot water storage cylinder.
A fullway gate valve is installed in the
cold feed pipework
incoming main pipework
hot feed pipework
feed from the F&E cistern.
A single impeller shower pump is installed between the
cold water cistern and the shower valve
hot water cylinder and the shower valve
shower head and the shower valve
shower head and the cold feed.
The minimum vertical height required for a gravity shower to work is
1 meter
2 meters
3 meters
4 meters
Rigid hot water pipework should be tested at 1½ times the system working pressure for
30 minutes
45 minutes
60 minutes
90 minutes
Which one of the following British Standards specifications covers soundness testing?
BS1192
BS5495
BS6600
BS6700
An electric shower is classed as
an instantaneous heater
a storage heater
a multipoint heater
a centralised heater
Which one of the following is the minimum size for gravity primary pipework from a continuous burning appliance?
15 mm
22 mm
28 mm
35 mm
A secondary return incorporates a pump made from
cast iron
brass
bronze
die cast aluminium
A cylinder thermostat is most likely to be located
⅓ down from the top of the cylinder
⅓ up from the bottom of the cylinder
¼ down from the top of the cylinder
¼ up from the bottom of the cylinder
Which one of the following calculations is used to work out the height that the vent from the cylinder should rise above the maximum water level in the cold water storage cistern before it inverts?
150 mm for every meter head plus 40 mm
150 mm for every meter head plus 50 mm
50 mm for every meter head plus 150 mm
40 mm for every meter head plus 150 mm
Which one of the following is the correct position of the feed to the cylinder in a cold water storage cistern?
Below the warning pipe
Below the cold distribution pipe
Above the cold distribution pipe
Above the hot distribution pipe
