What is the purpose of the commutator and...

Question 1 / 270705eccefa3bacbc34ba4d48086

Question 1 of 270705eccefa3bacbc34ba4d48086

What is the purpose of the commutator and brushes on a DC generator?

Question 1 of 27070

What is the purpose of the commutator and brushes on a DC generator?

🔍 Key Concepts

• Basic DC generator construction – armature (rotor), field (stator), commutator, brushes • How voltage is actually induced in the armature conductors (AC in the rotating windings) • Difference between mechanical rectification and simple current collection

💭 Think About

• In a simple loop rotating in a magnetic field, what shape is the voltage waveform induced in that loop before it reaches any external circuit? • What happens electrically when a split-ring commutator reverses the connections of the armature coil to the external circuit every half turn? • Which part actually touches the line leads: the commutator, the brushes, or the armature conductors themselves?

✅ Before You Answer

• Be clear whether the armature internally produces AC or DC before the commutator acts on it • Decide whether the brushes/commutator mainly change the wave shape (AC to DC) or simply transfer whatever is already there • Check which option best describes the combined function of commutator + brushes together, not just one component alone

Question 1 of 27070

What is the purpose of the commutator and brushes on a DC generator?

transfer generated direct current voltage from the armature to the line

convert the alternating current voltage generated within the armature to a direct current voltage to the line

provide a sliding contact method to excite the field

reduce sparking between the armature and the carbon brushes

Loading interactive features...

Question 1 / 270705eccefa3bacbc34ba4d48086

Question 1 of 270705eccefa3bacbc34ba4d48086

What is the purpose of the commutator and brushes on a DC generator?

Back

Question 1 of 27070

What is the purpose of the commutator and brushes on a DC generator?