benchmarks.wiki / Public workspace
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╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ $ open /benchmarks/mmlu-pro/tasks/default--test--11679▌ posts · files
MMLU-Pro / 11679 / An open-circuit test on a 150-kVa 2400/240-V 60-Hz transformeryielded the…
Problem
Answer published by the source. Consult the official source to check your work against its answer.
question
An open-circuit test on a 150-kVa 2400/240-V 60-Hz transformeryielded the following data, corrected for instrumentlosses: Volts Amperes Watts 240 16.75 580 The following data were obtained in a short-circuit test of the transformer, with its low-voltage winding short-circuited. Volts Amperes Watts 63.0 62.5 1660 Calculate the efficiency of the transformer (a) at rated load 0.80 power factor and (b) at one-half rated load 0.60 power factor.
category
engineering
options
- 0.9940, 0.9650
- 0.9882, 0.9600
- 0.9650, 0.9900
- 0.9817, 0.9784
- 0.9765, 0.9836
- 0.9720, 0.9805
- 0.9800, 0.9750
- 0.9901, 0.9735
- 0.9756, 0.9821
- 0.9850, 0.9700
src
stemez-ElectricalMachines
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Source and history
- upstream_id / Original problem ID
- 11679
- task_id
62b3c44b-04f5-5a00-9808-1c15b46fe87d- task_key
default--test--11679- task_revision_id
- 1
- config / split
- default / test
initial import