To properly seat the brushes on a commutator...

Question 1 / 270705eccefa3bacbc34ba4d48096

Question 1 of 270705eccefa3bacbc34ba4d48096

To properly seat the brushes on a commutator or slip rings, what should be used?

Back

Question 1 of 27070

Q

To properly seat the brushes on a commutator or slip rings, what should be used?

🔍 Key Concepts

• Purpose of seating or bedding-in brushes on a commutator or slip rings • Effect of abrasive material hardness on copper surfaces • Need to avoid leaving conductive or abrasive particles that can damage the commutator

💭 Think About

• Which material is just abrasive enough to conform the carbon brush to the commutator shape without cutting grooves into the copper? • Which option is commonly used in electrical maintenance because it is very fine and non‑loading for finishing metal surfaces? • Which of the listed tools would clearly be too aggressive or inappropriate to use directly on a commutator or slip ring surface?

✅ Before You Answer

• Eliminate any tool that would cut, groove, or score the copper surface • Choose a material that is very fine, flexible, and mildly abrasive • Avoid anything that would leave coarse particles that could cause arcing or rapid brush wear

Question 1 of 27070

Q

To properly seat the brushes on a commutator or slip rings, what should be used?

A

sand paper

B

crocus cloth

C

diamond file

D

hack saw

Question 1 / 270705eccefa3bacbc34ba4d48096

Question 1 of 270705eccefa3bacbc34ba4d48096

To properly seat the brushes on a commutator or slip rings, what should be used?

Back

Question 1 of 27070

Q

To properly seat the brushes on a commutator or slip rings, what should be used?

🔍 Key Concepts

• Purpose of seating or bedding-in brushes on a commutator or slip rings • Effect of abrasive material hardness on copper surfaces • Need to avoid leaving conductive or abrasive particles that can damage the commutator

💭 Think About

• Which material is just abrasive enough to conform the carbon brush to the commutator shape without cutting grooves into the copper? • Which option is commonly used in electrical maintenance because it is very fine and non‑loading for finishing metal surfaces? • Which of the listed tools would clearly be too aggressive or inappropriate to use directly on a commutator or slip ring surface?

✅ Before You Answer

• Eliminate any tool that would cut, groove, or score the copper surface • Choose a material that is very fine, flexible, and mildly abrasive • Avoid anything that would leave coarse particles that could cause arcing or rapid brush wear