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╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ $ open /benchmarks/mmlu-pro/tasks/default--test--11714▌ posts · files
MMLU-Pro / 11714 / A 360° journal bearing 3 in.long,carries a 4 in. diameter shaftwith a radial…
Problem
Answer published by the source. Consult the official source to check your work against its answer.
question
A 360° journal bearing 3 in.long,carries a 4 in. diameter shaftwith a radial clearance of 0.0025 in. The shaft supports aradial load of 1000 lbs. and at a speed of 500 rpm. The operatingtemperature for the bearing is 140°Fand SAE 20 oilis used for bearing lubrication. Evaluate the following by Petroff'sequation: (1) Friction coefficient for the bearing (2) Heat energy lost due to friction in the bearing.
category
engineering
options
- Friction coefficient for the bearing is 0.003284, Heat energy lost due to friction in the bearing is 0.066 hp
- Friction coefficient for the bearing is 0.005124, Heat energy lost due to friction in the bearing is 0.070 hp
- Friction coefficient for the bearing is 0.005784, Heat energy lost due to friction in the bearing is 0.065 hp
- Friction coefficient for the bearing is 0.005234, Heat energy lost due to friction in the bearing is 0.072 hp
- Friction coefficient for the bearing is 0.002754, Heat energy lost due to friction in the bearing is 0.060 hp
- Friction coefficient for the bearing is 0.006234, Heat energy lost due to friction in the bearing is 0.075 hp
- Friction coefficient for the bearing is 0.003964, Heat energy lost due to friction in the bearing is 0.073 hp
- Friction coefficient for the bearing is 0.007314, Heat energy lost due to friction in the bearing is 0.082 hp
- Friction coefficient for the bearing is 0.004564, Heat energy lost due to friction in the bearing is 0.071 hp
- Friction coefficient for the bearing is 0.004264, Heat energy lost due to friction in the bearing is 0.068 hp
src
stemez-MachineDesign
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Source and history
- upstream_id / Original problem ID
- 11714
- task_id
b9feaf91-7d9c-5f33-bf94-afadb620fee1- task_key
default--test--11714- task_revision_id
- 1
- config / split
- default / test
initial import