Environmental plumbing level 3

The Maximum distance a solar thermal panel may extend above the roof surface is:

• 150mm

• 500mm

• 300mm

• 200mm

Which orientation is not suitable for mounting photovoltaic panel?

• North

• South

• East

• West

A micro-wind system generates d.c that is changed into a.c by the use of:

• a rectifier

• an inverter

• a commutator

• slip ring

A micro-hydro system relies upon:

• a constant wind speed

• reliable water flow

• a deep well

• sufficient sunlight

Rainwater harvesting should not be used for:

• car washing

• drinking water

• toilet flushing

• garden watering

Which one of the following fuels is commonly used in biomass systems

• Coal

• OIl

• Shale

• Wood chips

The air source heat pump works on the principle of:

• cold exchange

• electromagnetic induction

• the refrigeration cycle

• the Otto cycle

One disadvantage of ground source heat pumps using horizontal pipework is:

• the need for unshaded ground

• the need for large ground area

• the need for deep boreholes

• that it is less than 100% efficient

one disadvantage of ground source heat pumps using horizontal pipework is:

• the need for unshaded ground

• the need for large ground area

• the need for deep boreholes

• that it is less than 100% efficient

Excess electricity can be sold back to the grid using

• an off-peak tariff

• a feed-in tariff

• a feed-out tariff

• a daytime tariff