Internal Combustion Engines Quiz

What are the two most commonly used internal combustion engines?

• Gasoline and Electric

• Diesel and Electric

• Gasoline and Diesel

• Hybrid and Electric

Why are gasoline engines less noisy compared to diesel engines?

• Due to smoother combustion process

• Due to better structural design

• Due to better fuel economy

• Due to higher compression ratio

What is the main difference in the combustion process between gasoline and diesel engines?

• Gasoline engines have a pre-mixed fuel and air while diesel engines mix during combustion

• Gasoline engines have a controlled combustion process while diesel engines have uncontrolled combustion

• Gasoline engines have a fuel injector while diesel engines use a spark plug

• Gasoline engines have a higher compression ratio than diesel engines

Why is it not advisable to put gasoline in a diesel engine?

• It will improve fuel economy

• It will cause detonations due to highly compressed air

• It will lead to smoother combustion

• It will not cause any firing

What is the reason behind diesel engines having better fuel economy compared to gasoline engines?

• Due to smoother combustion process

• Due to higher compression ratio

• Due to better structural design

• Due to pre-mixed fuel and air

What happens if atomized diesel is sprayed into high temperature air?

• Spontaneous combustion occurs

• Smooth combustion occurs

• No combustion occurs

• Detonations occur

Why do diesel engines require a more rugged structural design than gasoline engines?

• Due to smoother combustion process

• Due to better fuel economy

• Due to uncontrolled combustion process

• Due to higher compression ratio

What is the main difference in the way fuels burn between gasoline and diesel engines?

• Diesel is less volatile than gasoline

• Gasoline readily evaporates while diesel does not properly mix with air

• Diesel readily evaporates while gasoline does not properly mix with air

• Gasoline is less volatile than diesel

What is the purpose of a fuel injector in diesel engines?

• To mix fuel and air before combustion

• To achieve a high compression ratio

• To reduce excessive vibration and noise

• To initiate combustion

Why can diesel engines achieve a good compression ratio without the risk of self-ignition?

• Due to compressing only the air

• Due to pre-mixed fuel and air

• Due to better structural design

• Due to smoother combustion process