ASVAB Automotive Information Practice Test 721833

Question 1 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 air-fuel mix for optimum combustion

where the power is developed

how the fuel is ignited

the type of fuel used