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MMLU-Pro / 12001 / A 4-pole commutator machine has 124 lap coils each having two turns. The flux…

Problem

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

question

A 4-pole commutator machine has 124 lap coils each having two turns. The flux per pole is 0.015 weber. Calculate: (a) The d.c. voltage appearing across quadrature brushes (b) The r.m.s. voltage with three sets of brushes per pole pair for 3-phase working and with relative field / conductor speed = 1400 rev/min.

category

engineering

options

  1. a) 180 V, b) 100 V
  2. a) 160 V, b) 90 V
  3. a) 186 V, b) 106.5 V
  4. a) 195 V, b) 115 V
  5. a) 205 V, b) 125 V
  6. a) 200 V, b) 110 V
  7. a) 175 V, b) 95 V
  8. a) 170 V, b) 110 V
  9. a) 190 V, b) 105 V
  10. a) 210 V, b) 120 V

src

stemez-ElectricalMachines

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Source and history

upstream_id / Original problem ID
12001
task_id
1bb0cea9-7247-5f3d-9db0-c9c2fe2ebf91
task_key
default--test--12001
task_revision_id
1
config / split
default / test

Official source

initial import