Excessively tight drive belts installed between a motor and a refrigeration compressor pulley may cause what condition?

Correct Answer: Option C — premature wear of both the pulley end motor shaft bearing and the pulley end compressor crankshaft main bearing due to overloading

Over-tightened drive belts exert excessive radial side-loads on both the motor pulley-end bearing and the compressor crankshaft pulley-end bearing, leading to premature mechanical failure and accelerated wear.