Step 3 » GENERAL learning environment Category B (B, B1)

For answer  A 

Detonation in spark-ignition engines is an abnormal combustion phenomenon, in which, although the process starts correctly at the appearance of the spark, in certain areas of the combustion chamber the fuel mixture self-ignites suddenly, causing improper engine operation. This phenomenon consists of a rapid series of combustions that can produce effects similar to small explosions.

For answer  B 

In automotive mechanics terms, engine seizure means the blockage of the engine, that is when the internal parts (pistons, connecting rods, etc.) become stuck due to lack of lubrication, overheating or other serious defects, which makes the engine unable to operate at all.

For answer  C 

If the engine continues to run after the electric ignition has been interrupted, this phenomenon is called self-ignition and is caused by the spontaneous combustion of the fuel mixture without a spark.

The correct answer is: C

Recommendations:

Mechanics course (knowledge of the main elements) --> Mechanics course