Question

what tool should be used if an impact wrench cannot loosen a fastener within 3 to 5 seconds? a) breaker bar b) air ratchet c) torque wrench d) ratchet

Explanation:

A breaker bar is a long - handled tool that provides increased leverage. When an impact wrench (which uses rotational force with impacts) fails to loosen a fastener quickly (within 3 - 5 seconds), the breaker bar's leverage can be used to overcome the resistance of the fastener. An air ratchet is a power - driven ratchet (used for faster tightening/loosening in a limited space but not for high - torque situations where an impact wrench fails). A torque wrench is used for tightening to a specific torque value (not for loosening stubborn fasteners). A regular ratchet (without the power of an air ratchet) also lacks the leverage of a breaker bar for very tight fasteners.

Answer:

A. Breaker bar