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MMLU-Pro / 12214 / Consider a lap-wound armature 4 feet in diameter, having 12 poles. The winding…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

Consider a lap-wound armature 4 feet in diameter, having 12 poles. The winding consists of 240 coils of 4 turns each and the length of the pole face is 10 inches. Sixty percent of the conductors lie under the pole face where the flux density is 60,000 lines per square inch, and 15 percent lie in the pole fringe where the average density is 35,000 lines per square inch. What horsepower is the motor developing if the current flowing into the armature is 480 amperes and the machine is rotating at 200r.p.m. ?

category

engineering

options

  1. 175
  2. 180
  3. 240
  4. 250
  5. 220
  6. 200
  7. 230
  8. 196.5
  9. 205.7
  10. 213.4

src

stemez-ElectricalMachines

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Source and history

upstream_id / Original problem ID
12214
task_id
380291a0-dd9d-5a5c-85e7-2352ee70f4f7
task_key
default--test--12214
task_revision_id
1
config / split
default / test

Official source

initial import