Page 156 - CAPE Green Engineering Syllabus 2016.docx_Neat

-9- 02265020/CAPE/KMS 2015 SPEC

GREEN ENGINEERING
UNIT 2 - PAPER 02
KEY AND MARK SCHEME

Question 4.

S.O Suggested Response Mark Marks
Allocation KC AK PA
(a)(i)
Reduction of greenhouse gas 22
Reduce importation of fuel for transportation
Reduce carbon footprint of travel industry

(1 mark each for any TWO)

(a)(ii) 4 4
4 4
Motor vehicles utilize different forms of fuel
to power the engine. These fuels are burnt by
the engine to power the vehicle. During this
process carbon dioxide is produced and emitted
to the atmosphere. Electric vehicles would
reduce the need for fuel and do not give off
carbon emission during their operation.

OR

Motor vehicles utilize fuel which is imported.
This imported fuel is transported by ships.
While travelling to the Caribbean from their
source country, these ships burn fuel to power
themselves. During this process large
quantities of carbon dioxide are released into
the environment. Electric vehicles eliminate
the need for fossil fuel hence no carbon
emission during transportation of fuel to
supply the vehicles.

(a) (iii)

Electric vehicles utilize electrical energy to
recharge batteries in order to operate. This
electrical energy is generated by a power
plant which normally utilizes fossil fuel in
the energy generation process. To provide
additional energy for electric vehicle these
power plants use more fossil fuel and hence
emit more carbon dioxide to the atmosphere.