Certified Arborist Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

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Question: 1 / 400

This piece of hardware reduces abrasion of a cable:

Thimble

Lag-threaded, machine-threaded

The correct answer is that a thimble reduces abrasion of a cable. A thimble is a small metal or plastic fitting used in conjunction with a cable to create a smooth and rounded surface that prevents wear and tear on the cable as it bends or moves. By supporting the cable's loop or turning point, thimbles extend the life of the cable by minimizing friction and degradation from consistent abrasion during use.

Cables can wear down significantly if they are not protected where they make turns or are looped, which is where thimbles play a crucial role in arborist practices, especially in tree support systems. The other options do not pertain directly to reducing abrasion on cables and instead focus on different aspects of cabling or related practices.

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True/False: You can install J-hooks in decay

Cabling helps support which defects?

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