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MMLU-Pro / 11979 / A plate loses heat to a stream of air by convection. The plate is2 ft. in…

Problem

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question

A plate loses heat to a stream of air by convection. The plate is2 ft. in length, and it is initially at a surface temperature of 500°F.The ambient air temperature is 100°F, and the air flowrate is observed to be 150 ft/sec. Assuming a unit (1 ft.) width, calculate (a)theheat transferred from the laminar boundary layer region; and (b)theheat transferred from the turbulent boundary layer region. Then assume that the boundary layer is completely turbulent. Find (c)theheat transfer involved; and (d)theerror this assumption results in.

category

engineering

options

  1. (a) 1,800 Btu/hr, (b) 6500 Btu/hr, (c) 14,500 Btu/hr, (d) 55%
  2. (a) 2,900 Btu/hr, (b) 8100 Btu/hr, (c) 18,000 Btu/hr, (d) 75%
  3. (a) 1,500 Btu/hr, (b) 6000 Btu/hr, (c) 15,000 Btu/hr, (d) 50%
  4. (a) 2,400 Btu/hr, (b) 7600 Btu/hr, (c) 15,600 Btu/hr, (d) 65%
  5. (a) 2,663.3 Btu/hr, (b) 7440.7 Btu/hr, (c) 16,288 Btu/hr, (d) 61%
  6. (a) 3,200 Btu/hr, (b) 8300 Btu/hr, (c) 19,000 Btu/hr, (d) 78%
  7. (a) 2,100 Btu/hr, (b) 6800 Btu/hr, (c) 14,800 Btu/hr, (d) 53%
  8. (a) 3,000 Btu/hr, (b) 8000 Btu/hr, (c) 17,000 Btu/hr, (d) 70%
  9. (a) 1,200 Btu/hr, (b) 5800 Btu/hr, (c) 13,200 Btu/hr, (d) 45%
  10. (a) 2,000 Btu/hr, (b) 7000 Btu/hr, (c) 16,000 Btu/hr, (d) 60%

src

stemez-Thermodynamics

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Source and history

upstream_id / Original problem ID
11979
task_id
76f49d2f-9007-5ffe-950c-cae3a2e5aab6
task_key
default--test--11979
task_revision_id
1
config / split
default / test

Official source

initial import