Phase 2 Exam prep 1

What temperature is 373K in the Celsius scale?

• 173⁰C

• 100⁰C

• -173⁰C

• -200⁰C

The type of non-mechanical backflow prevention used on a domestic washbasin is known as

• AUK 1

• AUK 2

• AUK 3

• AUK 4

What is the specific heat capacity for water under atmospheric conditions?

• 3.14kj/kg/⁰C

• 4.18kj/kg/⁰C

• 9.18kj/kg/⁰C

• 1kj/kg/⁰C

Under Regulation 5 of the Water Regulations, the water undertaker must be informed when which one of the following operations is carried out?

• Installation of a bidet without an ascending spray or flexible hose

• Installation of a bath with a capacity of fewer than 230 litres

• Installation of an RPZ valve to protect against a category 2 fluid

• Installation of a pump drawing more than 12 litres per minute

If a hot water appliance has a fault where would you look for guidance?

• BSEN 806

• Water Regulations

• Manufacturer's instructions

• Approved Document Part L

Which of the following systems can this appliance be connected to?

• Single point water heater

• Low pressure system fed from a cold-water storage cistern

• Thermal store

• Unvented hot water system

An automatic bypass valve is activated by which of the following?

• Boiler shutting off

• Programmer being switched on

• Pressure created within the system

• Pressure of the incoming water service

Where should an automatic air vent not be placed?

• Highest part of the system

• Lowest part of the system

• Point where the vent enters the system

• Point where the cold feed enters the system

Which port is the cylinder connected to on a mid-position valve

• A

• B

• AB

• BA

Condensing boilers are specifically designed to...

• Provide stored hot water

• Provide hot water at low temeratures

• Extract less heat from the flue gases

• Extract more heat from the flue gases