Which of the following electric propulsion...

Question 1 / 2707066636eed28f7522a1c51d58a

Question 1 of 2707066636eed28f7522a1c51d58a

Which of the following electric propulsion motor types requires no brushes or electrical connections to the rotor?

Question 1 of 27070

Which of the following electric propulsion motor types requires no brushes or electrical connections to the rotor?

🔍 Key Concepts

• Construction of different motor rotors (squirrel cage vs wound rotor vs DC commutator) • How current is supplied to the rotating part (rotor) in AC and DC motors • Difference between brush-type and brushless motor designs

💭 Think About

• For each option, ask: does the rotor need a separate electrical connection (slip rings or commutator) for it to work? • Think about which motors use brushes or slip rings to get power into the rotor, and which use only electromagnetic induction. • Which motor type is commonly known for having a simple, rugged rotor with bars and end rings, requiring no electrical contact to it?

✅ Before You Answer

• Identify which listed motors have a commutator and brushes (typical of DC motors). • Identify which listed AC motors use slip rings to feed the rotor (typical of wound rotors or certain synchronous motors). • Confirm which motor type has a rotor with no external electrical connection at all, relying purely on induction.

Question 1 of 27070

Which of the following electric propulsion motor types requires no brushes or electrical connections to the rotor?

AC squirrel cage induction motor

AC wound rotor induction motor

DC shunt wound motor

AC synchronous motor