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'automobiles ignition failure occurs in damp weather.' explain, why??

Posted by Yatin Jindal 6 years, 10 months ago

CBSE > Class 12 > Physics

1 answers

Minakshi Kapoor 6 years, 10 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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