Automobile Engineering in ME
The auto ignition in a spark ignition engine means

Ignition of the charge before the passage of flame front
Ignition induced to supplement the process of normal combustion
Automatic ignition of the charge at the end of compression
Ignition induced by the passage of a spark

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Automobile Engineering in ME
The advantage of having a tandem master cylinder arrangement in automobiles is that it

Boosts the brake fluid pressure to reduce the force required to depress the brake pedal
Enhances safety by activating the brakes using vacuum pressure in the event of brake fluid loss
Supplies equal fluid pressure to each line of a divided line brake circuit, thereby preventing the brakes from dragging on one side
Enhances safety by serving two independent lines in a divided line brake circuit

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