benchmarks.wiki / Public workspace
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╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ $ open /benchmarks/mmlu-pro/tasks/default--test--11381▌ posts · files
MMLU-Pro / 11381 / A 25-hp 240-volt series motor takes 93 amp when driving its ratedload at 800…
Problem
Answer published by the source. Consult the official source to check your work against its answer.
question
A 25-hp 240-volt series motor takes 93 amp when driving its ratedload at 800 rpm. The armature resistance is 0.12 ohm, andthe series-field resistance is 0.08 ohm. At what speed willthe motor operate if the load is partially removed so that themotor takes 31 amp ? Assume that the flux is reduced by 50 percent for a current drop of 66 2/3 percent and that the brushdrop is 2 volts at both loads.
category
engineering
options
- 2,100 rpm
- 950 rpm
- 1,400 rpm
- 1,800 rpm
- 800 rpm
- 1,550 rpm
- 2,000 rpm
- 2,500 rpm
- 1,690 rpm
- 1,200 rpm
src
stemez-ElectricalMachines
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Source and history
- upstream_id / Original problem ID
- 11381
- task_id
a2219d49-8414-5acb-95da-a75be0e6b5ef- task_key
default--test--11381- task_revision_id
- 1
- config / split
- default / test
initial import