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The video provides an overview of the rocker arm, a crucial component in engine mechanisms.

What is the primary role of a rocker arm in an engine?

• To increase fuel efficiency

• To open and close engine valves

• To reduce engine noise

• To cool the engine

Which component is directly moved by the rocker arm?

• Camshaft

• Crankshaft

• Piston

• Valve

What material is commonly used to manufacture rocker arms?

• Aluminum

• Plastic

• Glass

• Wood

How does the rocker arm affect engine performance?

• By controlling the air-fuel mixture

• By regulating the timing of valve operations

• By increasing engine temperature

• By reducing engine weight

Which of the following is NOT a function of the rocker arm?

• Ensuring proper valve timing

• Transmitting camshaft motion to the valves

• Increasing engine horsepower

• Reducing friction in the engine