Multiple choice general knowledge science & technology

Expand HAC

  1. High Altitude Compensator

  2. High Altitude Calculator

  3. High Air Compressor

  4. High Air Conditioner
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A Correct answer
Explanation

HAC stands for High Altitude Compensator in automotive systems. It adjusts the fuel-air mixture to compensate for thinner air at higher altitudes, maintaining proper engine performance.

AI explanation

HAC stands for High Altitude Compensator, a component found in older carbureted engine fuel systems that adjusts the air-fuel mixture to compensate for the thinner air at higher elevations. Without this compensation, an engine tuned for sea level would run too rich at altitude, hurting performance and efficiency. The other expansions are plausible-sounding but not the actual automotive term.

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