benchmarks.wiki / Public workspace
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╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ $ open /benchmarks/mmlu-pro/tasks/default--test--11460▌ posts · files
MMLU-Pro / 11460 / When the field rheostat is cut out, a 230-volt shunt motor generatesa…
Problem
Answer published by the source. Consult the official source to check your work against its answer.
question
When the field rheostat is cut out, a 230-volt shunt motor generatesa counteremfof 220 volts at no load. The resistanceof the armature is 2.3 ohms and that of the field is 115 ohms.Calculate the (a) Current through the armature when the field rheostat is cutout. (b) Current through the armature when sufficient external resistancehas been inserted in the field circuit to make the fieldcurrent one-half as great.
category
engineering
options
- 6.35 amperes, 54.2 amperes
- 3.35 amperes, 53.2 amperes
- 4.00 amperes, 52.2 amperes
- 5.35 amperes, 53.2 amperes
- 5.35 amperes, 51.2 amperes
- 4.35 amperes, 52.2 amperes
- 4.35 amperes, 51.2 amperes
- 3.35 amperes, 50.2 amperes
- 4.35 amperes, 53.2 amperes
- 4.35 amperes, 55.2 amperes
src
stemez-ElectricalMachines
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Source and history
- upstream_id / Original problem ID
- 11460
- task_id
b277c9b1-cf4e-5f6c-893f-01a4c1519ff5- task_key
default--test--11460- task_revision_id
- 1
- config / split
- default / test
initial import