PND Chapter 3

What factors influence the amount of electricity generated in a simple generator? speed of conductor movement, number of coil turns, load connected and

• Temperature of the environment

• Type of fuel used

• Length of the generator's casing

• Strength of magnetic field

How does the speed of the magnetic field and armature affect electricity generation?

• The magnetic field has no effect on electricity generation.

• Only the armature speed affects electricity generation.

• Faster movement increases induced EMF and electricity generation.

• Slower movement decreases induced EMF and electricity generation.

Why is the strength of the magnetic field considered the most important factor in electricity generation?

• The strength of the magnetic field directly affects the induced voltage in electricity generation.

• The magnetic field strength is irrelevant to the efficiency of electricity generation.

• A stronger magnetic field reduces energy losses during transmission.

• The strength of the magnetic field determines the type of generator used.

In a simple generator, where is the magnetic field strongest?

• At the end of poles

• Along the wire connections

• At the edges of the magnet

• In the center of the coil

What happens to the electricity generated as the magnetic pole moves away from the armature coils?

• The electricity generated fluctuates randomly.

• The electricity generated decreases.

• The electricity generated remains constant.

• The electricity generated increases.

What is the significance of the peak value in an e.m.f waveform?

• The peak value indicates the maximum voltage level in an e.m.f waveform.

• The peak value is irrelevant to the overall shape of the e.m.f waveform.

• The peak value indicates the minimum voltage level in an e.m.f waveform.

• The peak value represents the average voltage level in an e.m.f waveform.

How many poles does a simple generator typically have?

• 6 poles

• 8 poles

• 4 poles

• 2 poles

What role do the armature coils play in electricity generation?

• Armature coils act as a resistor to limit current flow.

• Armature coils store electrical energy for later use.

• Armature coils convert thermal energy into electrical energy.

• Armature coils induce EMF when rotated in a magnetic field, generate electricity.

Can the number of coils in the armature be changed after manufacturing?

• Yes, it can be modified during repairs.

• The number of coils can be increased easily.

• Coils can be added or removed with special tools.

• No, the number of coils in the armature cannot be changed after manufacturing.

What is meant by the term 'amplitude' in the context of an output waveform?

• Amplitude is the average value of the waveform's frequency.

• Amplitude refers to the speed of the waveform's oscillation.

• Amplitude is the total energy of the waveform.

• Amplitude is the maximum value of the waveform's displacement from its mean position.