What essential electrical component is required to generate high-voltage ignition sparks in a battery-powered petrol engine_______________?
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Answer: B. ignition coil and distributor
Explanation
Battery-powered petrol engines operate on low primary circuit voltage that cannot bridge spark plug gaps. An ignition coil steps up the battery voltage to thousands of volts required for firing sparks. A distributor then correctly times and routes this high-tension electrical current to each engine cylinder. Spark ignition internal combustion engines require precise electrical timing to ignite fuel-air mixtures. The ignition coil works on electromagnetic induction principles using primary and secondary windings. Distributors contain contact breakers and rotor arms to sequence sparks in multi-cylinder engines.
Automotive ignition systems ensure reliable engine starting and smooth combustion across varying speeds. Faulty ignition coils or distributors cause engine misfiring, rough idling, and poor fuel economy. Modern electronic ignition systems have largely replaced mechanical distributors while retaining coil principles. Option A is incomplete because a coil alone cannot route high-voltage pulses to multiple engine cylinders. Option C omits the distributor required for multi-cylinder spark distribution sequencing. Option D lacks the distributor component necessary to direct high-tension current to the spark plugs.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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