Elevator Mechanic Practice Exam

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Prepare for the Elevator Mechanic Exam with comprehensive quizzes, flashcards, and multiple-choice questions. Each question includes hints and detailed explanations to ensure you are ready for your exam!

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What is the tolerance for 3/8 at .003?

372-.378 bilateral
375-.380 unilateral
380-.384 bilateral
387-.393 unilateral

The correct answer is: 372-.378 bilateral

The appropriate tolerance for a measurement of 3/8 inch, which is equivalent to 0.375 inches, at a tolerance level of 0.003 inches is calculated by determining both the upper and lower limits around the nominal size. Here, the nominal size is 0.375 inches. To apply a tolerance of ±0.003 inches, you would subtract and add the tolerance value to the nominal size. This gives: - Lower limit: 0.375 - 0.003 = 0.372 inches - Upper limit: 0.375 + 0.003 = 0.378 inches This results in a bilateral tolerance from 0.372 inches to 0.378 inches, meaning the total allowable variation from the nominal measurement can be both above and below that specification. The correct choice accurately reflects this calculation, ensuring both the lower and upper limits are set correctly around the nominal dimension.