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Automobile ignition failure occurs in damp …

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Automobile ignition failure occurs in damp weather .Explain why?
  • 1 answers

Sia ? 3 years, 7 months ago

The insulating porcelain of the spark plugs accumulates a film of dirt. The surface dirt is hygroscopic and picks up moisture from the air. Therefore, in humid weather, the insulating porcelain of the plugs becomes quasi-conductor. This allows an appreciable proportion of the Spark to leak across the surface of the plug instead of discharging across the gap.

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