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WorksheetsEnvironmental quiz 1
Total questions: 20
Worksheet time: 2hrs 40mins
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.
Which orientation is NOT suitable for mounting a photovoltaic panel?
a) North.
b) South.
c) East.
d) West.
The maximum distance a solar thermal panel may extend above the roof surface is:
a) 50 mm
b) 150 mm
c) 200 mm
d) 250 mm.
A ground source heat pump installed on a building with limited grounds will require:
a) deep boreholes
b) long pipe trenches
c) an extra low-voltage supply
d) shallow trenches.
An air source heat pump has an electrical input of 2.5 kW and output of 7.5 kW. The coefficient of performance will be:
a) 0.33
b) 3
c) 5
d) o
The position of the biomass flue should be:
a) at the front of the building
b) at the side or rear of a building
c) roof-mounted at least 2 m above roof level
d) roof-mounted at least 3 m above roof level.
An 'on-grid' generating system is one where the system:
a) is connected in a 4 x 4 grid
b) is connected to a battery bank only
c) can be moved within an installed grid
d) is connected to the national grid.
Installation of greywater systems would depend upon:
a) total black and greywater available
b) adequate greywater availability
c) sufficient rainwater only
d) direct mixing with wholesome water.
One disadvantage associated with biomass systems is:
a) water produced by burning fuel
b) inability to control heat output
c) need for large storage area
d) large amount of ash produced.
One disadvantage of photovoltaic systems is:
a) they cannot be installed facing South
b) there is little or no output at night
c) they will always require roof strengthening
d) they cannot be exposed to snow or ice.
The minimum recommended height of wind turbine blades from the ground is:
a) 1—2 m
b) 3-4 m
c) 4-5 m
d) 6 - 7 m
