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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The ________ is a low spot in metal where the force of a flame has pushed out molten metal.

backfire
crater
divot
pockmark

The correct answer is: backfire

In welding, a backfire refers to a momentary sputtering of the flame at the tip of the torch. During a backfire, the flame might briefly extinguish and create a popping sound. In the context of the given question, a backfire can lead to the formation of a low spot in the metal where the force of the flame has pushed out molten metal, causing imperfections in the welding process. Therefore, the correct answer is A. Choices B, C, and D (crater, divot, and pockmark) do not accurately describe the concept of a low spot in metal caused by the force of a flame in welding, making them incorrect options in this context.