What is meant by the synchronous speed of an...

Question 1 / 270705eccefa4bacbc34ba4d481f0

Question 1 of 270705eccefa4bacbc34ba4d481f0

What is meant by the synchronous speed of an AC induction motor?

Question 1 of 27070

What is meant by the synchronous speed of an AC induction motor?

🔍 Key Concepts

• AC induction motor basic parts: stator vs. rotor • How the rotating magnetic field is related to line frequency (in Hz) and number of poles • Difference between synchronous speed and actual rotor speed (slip)

💭 Think About

• Think about which part of the motor actually locks directly to the supply frequency: the rotor or the magnetic field in the stator? • How is synchronous speed usually calculated from line frequency and number of poles? (Recall the formula often given in RPM.) • Which term describes the difference between synchronous speed and rotor speed, expressed as a percentage?

✅ Before You Answer

• Identify which option refers specifically to a speed in RPM, not a percentage or a frequency in Hz • Make sure you can clearly distinguish rotor mechanical speed from the speed of the rotating magnetic field • Confirm that slip is the difference between two speeds, not itself the definition of synchronous speed

Question 1 of 27070

What is meant by the synchronous speed of an AC induction motor?

speed of the rotating stator magnetic field

slip in percent of rotor RPM

speed at which the rotor turns

frequency of the rotor current