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The conditions most likely to produce the highest engine power are…

  • A
    cold air at high pressure with high relative humidity.
  • B
    warm air at low pressure with high relative humidity.
  • C
    cold and dry air at high pressure.
  • D
    warm and dry air at high pressure.

Cold, dry, and high pressure are the perfect combination that will increase the density of the air and will provide the engine’s best efficiency and power. Hot, humid, and low-pressure air will decrease air density and engine power.

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