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qid 11458 · engineering

Question: (a) Calculate the synchronous speed of an eight-pole induction motor when supplied with power from a 60-cycle source. (b) Calculate the synchronous speed of 60-cycle induction motors having four poles. (c) The rotor speed of a six-pole 50-cycle induction motor is 960 rpm. Calculate the percent slip. (d) Calculate the speed of a 60-cycle,14-pole motor if the slip s is 0.05.

  1. 720, 1800, 2, 475
  2. 900, 1600, 3.5, 485
  3. 920, 1720, 4.7, 482
  4. 950, 1850, 3, 480
  5. 880, 1840, 5.5, 492
  6. 910, 1790, 4.5, 490
  7. 850, 1750, 6, 505
  8. 900, 1800, 4, 488
  9. 750, 1900, 2.5, 495
  10. 800, 1700, 5, 498

Our answer: H. 900, 1800, 4, 488 Source quote machine-checked (exact quote)

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Multi-step solver (maze), replayed by code

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Current source

Wikipedia, "Induction motor"

https://en.wikipedia.org/wiki/Induction_motor

“is defined as the difference between synchronous speed and operating speed, at the same frequency, expressed in rpm, or in percentage or ratio of synchronous speed.”

Source quote machine-checked (exact quote)

retrieved 2026-09-18T01:08:20.384Z

page text sha256 a03e1a19d54db391… · content sha256 b700644b5f924bfb…

addendum maze_qid11458_b4_maze_input_ADDENDUM_source_rs20260918T010820Z · sha256 66e0f70d32bd5574… · replaces the version below, addendum sha256 ea3bcf3e0bf026e2…

Earlier version (superseded)

https://en.wikipedia.org/wiki/Induction_motor

Source weak (http_get_200_text_and_question_terms)

retrieved 2026-09-17T23:25:30.587Z

page text sha256 a6d61d3d6df240fe… · content sha256 —

addendum maze_qid11458_b4_maze_input_ADDENDUM_source_bf20260917T232530Z · sha256 ea3bcf3e0bf026e2… · replaces the version below, addendum sha256 d4358c622b57a390…

Earlier version (superseded)

No public source has been found for this card yet (3 places checked internally).

addendum maze_qid11458_b4_maze_input_ADDENDUM_source · sha256 d4358c622b57a390…

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