Macrogeneration

Question 1

What is the base/stem of the turbine called?

Answer 1

Turbine tower

Question 2

What happens in the boiler in large scale

generation of electricity from fossil fuels.

Answer 2

Combustion of fuel {1}

to produce steam {1}.

Question 3

What happens in the Turbine in large scale

generation of electricity from fossil fuels.

Answer 3

Steam driving a turbine {1}
which is connected to a generator to produce
electricity {1}.

Question 4

Renewable energy sources can be used to generate electricity
either directly or indirectly. Give one example of their use to generate electricity
directly and one example of their use to generate electricity indirectly. {2}

Answer 4

Direct use-Wind, Hydroelectric, Wave or Tidal. {1}

Indirect use-Solar PV or Biomass. {1}

Question 5

Identify the main energy transformations that take place in the wind turbine. {2}

Answer 5

Kinetic energy transferred from the shaft, to relative rotational motion (kinetic energy) between
a metal coil and a magnetic field in the generator. {1}

This results in electromagnetic induction. On other words kinetic energy of
relative motion is transferred into inducted electrical energy. {1}