Form 3 Chapter 6

Which of the following is catagorized as non-renewable energy sources?

• Biomass energy

• Nuclear energy

• Wave energy

• Geothermal energy

Induced current (Electricity) can be produced by

• Boiling the water

• Friction of magnet

• Changing in magnetic field (Cutting of magnetic field line)

• Throwing thing from high ground

What is the function of steam in the thermal power plant shown in the diagram above?

• To heat up the turbine

• To produce electricity

• To rotate the turbine

• To be used in chemical reaction

Figure above shows a simple diagram of nuclear power plant. As similar to other power plants (thermal,hydro,wind), which of the part where strong magnets are in-placed.

• Turbine

• Generator

• Reactor

• Condenser

Which of the following is correct for the energy change happened in a biomass power station.

• Chemical energy > Heat energy > Kinetic energy > Electrical energy

• Nuclear energy > Heat energy > Kinetic energy > Electrical energy

• Heat energy > Kinetic energy > Electrical energy

• Chemical energy > Kinetic energy > Electrical energy

Direct current (DC) are electric current that flows in on direction only. Which of the following are not the sources of DC current?

• Solar cells

• Car accumulators

• Batteries

• Back-up generator

Alternating current is an electric current that ( )

• flows in on direction only

• flows in unknown directions

• flows in constantly reversing direction

• flows in specific direction depend on the type of circuit

Which of the following is not the function of Cathode Ray Oscilloscope (C.R.O.)?

• Show differences in shape of graph for DC and AC

• Show the direction of current for DC and AC

• Show the resistant for DC and AC

• Show the voltage change for DC and AC

In which arrangement does the LED light up?

• P,Q,R

• P,Q

• P,R

• Q,R

Transformer is a device for changing the voltage of ( )

• Alternating current (AC)

• Direct current (DC)

• Direct and alternating current (DC & AC)

• Non of above