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WorksheetsElectricity
Total questions: 14
Worksheet time: 7mins
The diagram shows how electrical energy is produced.
What does Q represent?
The water is heated until steam is produced and the turbine is rotated.
The water rotates a motor, which will then rotate a generator.
A mixture of steam and gas is heated until they expand and the turbine is generated.
The water rotates a turbine, which will then rotate a generator.
Which of the following describe the characteristics of non-renewable energy sources?
Can be depleted if the usage is not controlled
Takes millions of years to be formed
Can not cause environmental pollution
Have limited sources
The diagram shows an apparatus.
Which of the following statements are true about the apparatus?
It is used to change a low input voltage to a higher output voltage
It alters the voltage of alternating current
It is used to change a high input voltage to a lower output voltage
It helps to reduce energy wastage during the transmission of electrical energy
The diagram shows four transformers, A, B, C and D.
Which transformer is a step - up transformer?
A
B
C
D
Which match is true about the type of generator and the fluid that spinning the turbine?
Thermal generator - High pressure steam
Hydro - The mixture of hot gas and air
Gas turbine - High pressure water
Diesel - The mixture of petrol and air
What is the function of the National Grid Network?
Transmit electrical energy all over the country through high voltage cable network
Collect and channel the electrical energy to the consumers
Store voltage for emergency use
Lower the value of voltage to suit the supplied area
Which of the following is non - renewable source of energy?
A device had been installed in a circuit causing the reading of the voltage supplied in the circuit to increase from 20 V to 100 V.
What is the device?
Resistor
Dry cell
Transformer
Fuse
Which one is renewable energy source?
Nuclear
Geothermal
Coal
Natural gas
What is the energy changes that occur in the power station?
Wind energy --> electrical energy
kinetic energy --> electrical energy
Chemical energy --> electrical energy
Gravitational potential energy --> electrical energy
Zahid is conducting an activity to generate electricity by using the apparatus as shown in the diagram.
What should be done by Zahid to produce electric current?
move the copper rod and move the galvanometer
move the copper rod and move the magnet
move the magnet and move the galvanometer
move the galvanometer and replace the copper rod with a wooden ruler
Which sequence of energy changes in the nuclear power station is correct?
Nuclear energy --> kinetic energy --> electrical energy
chemical energy --> heat energy --> nuclear energy --> kinetic energy --> electrical energy
heat energy --> kinetic energy --> nuclear energy --> chemical energy --> electrical energy
nuclear energy --> heat energy --> kinetic energy --> electrical energy
Which one is NOT renewable energy sources?
petroleum and wind
wind and geothermal
geothermal and nuclear energy
Petroleum and nuclear energy
Which of the follwing generators does not use a turbine to produce electricity?
nuclear generators
solar
hydroelectric generators
thermal generators
