Environmental quiz 1

A system that uses fluid to capture heat from the sun is known as;

• photovoltaic

• solarvoltaic

• solar thermal

• solar thermostatic

A buffer tank can be used for storing;

• Cold water

• rain water

• electricity

• hot water

A system that uses sunlight

• a) photovoltaic

• b) photosynthetics

• c) solar thermal

• d) solar chemical.

Excess electricity can be sold back to the grid using:

• a) an off-peak tariff

• b) a feed-in tariff

• c) a feed-out tariff

• d) a daytime tariff.

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

• a) the need for unshaded ground

• b) the need for large ground area

• c) the need for deep boreholes

• d) that it is less than 100% efficient.

The air source heat pump works on the principle of:

• a) cold exchange

• b) electromagnetic induction

• c) the refrigeration cycle

• d) the Otto cycle.

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

• a) Coal.

• b) Oil.

• c) Shale.

• d) Wood chips.

Rainwater harvesting should not be used for:

• a) car washing

• b) drinking water

• c) toilet flushing

• d) garden watering.

A micro-hydro system relies upon:

• a) a constant wind speed

• b) reliable water flow

• c) a deep well

• d) sufficient sunlight.

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

• a) a rectifier

• b) an inverter

• c) a commutator

• d) slip rings.