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Which of the following is not a feature of the spark plug?

a) Varies from 0.5 to 0.85 mm
b) Used in cold engines
c) Dissipates the heat very quickly, it used for hot engine
d) Ratio of turns in primary and secondary is 1:100

Answer: d
Explanation: The last option is a feature of the ignition coil in which 6 or 12-volt current is fed in the primary winding and from the secondary winding voltage to the tune of 2000 volt is tapped.

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