🔍 Key Concepts

• How drive belts transmit power between the electric motor and the compressor • What condition would make the compressor HARDER to turn (increasing load on the belts) • How the unloader and receiver pressure affect starting and running load

💭 Think About

• Ask yourself: which option would cause the compressor to work against the GREATEST resistance while running? • Consider which condition makes the compressor pump more air under higher pressure versus reducing or bypassing load. • Think about whether each choice mainly affects internal compressor temperature/efficiency or the actual mechanical load on the drive shaft and belts.

✅ Before You Answer

• For each option, decide: does this make the compressor MECHANICALLY harder or easier to turn? • Identify which condition would increase the torque demand on the drive, making belts more likely to slip under load. • Verify in your mind how an unloader is supposed to work at startup and during operation, and what happens if it fails in the worst way.