ASVAB Automotive Information Components Practice Test 578472

Question 4 of 5
Internal Combustion

Combustion is the burning of an air-fuel mixture to provide energy. It requires the presence of air, fuel, and a heat source to ignite the air-fuel mixture. In the internal combustion engine that powers automobiles and trucks the combustion happens inside the engine utilzing a fuel like gasoline, diesel fuel, or natural gas.

What is the primary difference between internal and external combustion engines?

the type of fuel used

where the power is developed

how the fuel is ignited

the air-fuel mix for optimum combustion