Agriculture Mechanics EOPA Review

What is the primary purpose of preventative maintenance on internal combustion engines?

• To increase fuel consumption

• To reduce engine lifespan

• To prevent engine failures and extend lifespan

• To make engines louder

Which of the following is NOT a component of internal combustion engines?

• Piston

• Crankshaft

• Alternator

• Propeller

What is the fire triangle composed of?

• Fuel, oxygen, and heat

• Water, air, and earth

• Fuel, water, and heat

• Oxygen, nitrogen, and carbon dioxide

Which tool is commonly used in shielded metal arc welding?

• Electrode holder

• Plasma cutter

• Welding torch

• Soldering iron

What is a characteristic of concrete?

• It is highly flexible

• It is a good conductor of electricity

• It hardens over time

• It is transparent

What is the main function of a carburetor in an internal combustion engine?

• To generate electrical power

• To lubricate engine parts

• To cool the engine

• To mix air and fuel for combustion

What is the primary role of a spark plug in a gasoline engine?

• To cool the engine

• To ignite the air-fuel mixture

• To provide lubrication

• To filter the air intake

What is the primary function of the flux coating on an electrode in shielded metal arc welding?

• To provide electrical insulation

• To stabilize the arc and protect the weld pool

• To cool the electrode

• To increase the welding speed

Which of the following is a common defect in shielded metal arc welding?

• Porosity

• Overheating

• Oxidation

• Corrosion

What type of current is typically used in shielded metal arc welding?

• Both AC and DC

• Alternating Current (AC)

• Direct Current (DC)

• Static Current