Question 8 of 25
Score: 0/0Brake drums should not have cracks longer than what fraction of the friction surface width?
ExplanationBrake drums should not have cracks longer than 1/2 the width of the friction area, because longer cracks can weaken the drum and cause it to fail.
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Did you know? Drain your tanks daily — moisture is the enemy of an air system, and the exam knows it.
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