What is the rotor speed of a six pole, 60...

Question 1 of 270705eccefa4bacbc34ba4d481e7

What is the rotor speed of a six pole, 60 cycle, induction motor operating at full load with 3% slip?

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Question 1 of 27070

Q

What is the rotor speed of a six pole, 60 cycle, induction motor operating at full load with 3% slip?

🔍 Key Concepts

• Synchronous speed formula for an AC motor using frequency and number of poles • Definition of slip in an induction motor and how it relates rotor speed to synchronous speed • Unit consistency: making sure all speeds are expressed in RPM

💭 Think About

• First, calculate the motor’s synchronous speed from the given frequency and number of poles. Is this speed one of the choices or will you need another step? • How does a 3% slip change the rotor speed compared to synchronous speed: does it make the rotor a bit faster or a bit slower? By what percentage? • Once you adjust for slip, which option is closest to your calculated rotor speed?

✅ Before You Answer

• Confirm the correct synchronous speed formula and plug in 60 Hz and 6 poles correctly before doing anything with slip • Apply 3% slip to the synchronous speed in the correct direction (slip always means the rotor is slightly slower than synchronous speed in an induction motor) • Double-check that your final rotor speed value is in RPM and matches one of the choices reasonably closely