AG Mechanics CDE Practice Exam

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Prepare effectively for the AG Mechanics CDE exam with our engaging quiz. Featuring multiple-choice questions and detailed explanations, you can increase your knowledge of agricultural mechanics and develop the skills necessary for success in the competition.

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__________ are off-center enlargements on the camshaft that converts rotary motion to reciprocating motion.

  1. Counterweights

  2. Lobes

  3. Pistons

  4. Valves

The correct answer is: Lobes

Lobes are off-center enlargements on the camshaft that are responsible for converting the rotary motion of the camshaft into the reciprocating motion needed to open and close the valves in an engine. Camshaft lobes push against lifters, which then push against pushrods or directly on the valves, causing them to open and close at the correct times in the engine's cycle. Counterweights, Pistons, and Valves do not serve this specific purpose in the engine's operation.

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