When air compressors are arranged for...

Question 1 / 270705eccef9bbacbc34ba4d45572

Question 1 of 270705eccef9bbacbc34ba4d45572

When air compressors are arranged for automatic operation, the cylinders can be unloaded during starting by __________.

Question 1 of 27070

When air compressors are arranged for automatic operation, the cylinders can be unloaded during starting by __________.

🔍 Key Concepts

• How unloading an air compressor reduces starting load on the motor • Different methods of preventing compression during startup (bypassing air, holding valves open, or cutting out cylinders) • What the phrase "all of the above" implies about the other options

💭 Think About

• Think about what it physically means to unload a compressor cylinder during starting. What has to happen to the air in that cylinder so the motor doesn’t work as hard? • For each option, ask: Would this method prevent the cylinder from building pressure during startup? If yes, that method is a form of unloading. • Consider whether these listed methods are mutually exclusive, or if more than one can be valid ways to achieve unloading on different compressor designs.

✅ Before You Answer

• For each choice, verify if it would reduce or eliminate pressure build‑up in the cylinder during starting. • Check your knowledge of common automatic compressor unloading systems used on marine air compressors. • Before choosing "all of the above", be sure that every single method listed truly unloads the cylinders in some way.

Question 1 of 27070

When air compressors are arranged for automatic operation, the cylinders can be unloaded during starting by __________.

bypassing the discharge to suction

fitting depressors which hold the suction valve plates on their seats

step unloading the cylinders in a multi-cylinder machine

all of the above

Question 1 / 270705eccef9bbacbc34ba4d45572

Question 1 of 270705eccef9bbacbc34ba4d45572

When air compressors are arranged for automatic operation, the cylinders can be unloaded during starting by __________.

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Question 1 of 27070

When air compressors are arranged for automatic operation, the cylinders can be unloaded during starting by __________.