📊 Heat Engines
Q. Which is not the cause for loss of heat in boiler due to incomplete combustion?
  • (A) Under cooling of furnace at low ratings
  • (B) Improper secting of boiler
  • (C) Insufficient air supply
  • (D) Boiler drum uninsulated
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✅ Correct Answer: (D) Boiler drum uninsulated

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