General Studies · IC Engines
Which of the following best explains why a simple carburetor tends to deliver a progressively richer mixture at higher throttle openings?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The throttle valve restricts fuel flow more than air at higher speeds.
- 2Fuel density increases while air density decreases with increasing pressure differential.
- 3Air density decreases with increasing flow while fuel density remains constant, leading to more fuel relative to air.✓
- 4The float chamber overflows due to higher suction pressure at high throttle positions.
Correct answer
Air density decreases with increasing flow while fuel density remains constant, leading to more fuel relative to air.
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