WorksheetsPower Generation (Fossil Fuel, Nuclear and Hydro)
Total questions: 15
Worksheet time: 12mins
When moving neutrons hit the nuclei of certain other atoms thereby causing them to change, and this happens repeatedly, it is said to be a _______________________.
nuclear chain reaction
alpha radiation
nuclear half-life
control rod
At a nuclear or fossil fuel power plants, these are referred to as __________________.
cooling towers
reactor towers
smoke stacks
vapor chambers
The process of generating nuclear power is called ___
nuclear alpha decay
nuclear fusion
nuclear fission
nuclear fuel enrichment
What is the function of a turbine?
When it spins, it makes sparks, inducting electricity.
It transfers the energy from the flow of steam or water to the generator.
It speeds up the steam or water to keep it at a steady pace.
It controls the steam or water so it can be pumped around in a cycle.
What does a generator in hydroelectricity do?
It spins when the water passes through it.
It moves the water from a higher elevation to a lower elevation.
It helps the movement of fish to pass safely through the dam.
It electromagnetically induces electricity.
The efficiency of coal fired power plants is typically
10 - 20%
30 - 40%
50 - 60%
70 - 80%
The location of the largest amount of degraded energy in a fossil fuel or nuclear power plant is
in the heat exchanger
in the turbines
in the generator
in the condenser
The moderator in a nuclear reactor
slows neutrons down.
speeds neutrons up.
captures neutrons.
enriches the uranium.
Enriching uranium beyond 80% is done in order to . . .
have controlled chain reactions.
have uncontrolled chain reaction.
produce slow neutrons.
produce fast neutrons.
Controlled chain reactions in a nuclear reactor is achieved using . . .
a moderator.
control rods.
fuel pellets.
heat exchanger.
A typical tide change goes from 3 m above sea level to 2 m below sea level. What is the ∆h for the average energy generated in 12 hours?
2.5 meters
5.0 meters
1.0 meter
Pumped water storage is a great solution for
generating power where water is scarce.
storing surplus solar and wind power for later use.
generating power in a flat location.
eliminating fossil fuel power plants.
Hydroelectric power is based on . . .
gravitational potential energy of water.
kinetic energy of water.
chemical potential energy of water.
elastic potential energy of water.
1.23 x 103 kg of coal (specific energy 22 MJ kg-1) is burned in a 35% efficient power plant every hour. Determine the output power of this power plant.
2.6 MW
21 MW
0.33 MW
160 MW
Determine the flow rate needed from a lake water storage hydropower dam with a water height of 20. m and an efficiency of 75% to produce 3.0 MW of power.
20,000 kg s-1
11,300 kg s-1
200,000 kg s-1
2,000 kg s-1
