Question 21General Subjects - Assistant Engineer70% to pass
If all of the air charge has been lost from a ship service air receiver, the compressor mechanical unloading system will _______________.
AI Explanation
The correct answer is C) fail to function as designed, but the compressor having no load will start with little or no difficulty.
When the air charge has been lost from a ship service air receiver, the compressor's mechanical unloading system will not function as designed. This is because the unloading system relies on the air pressure in the receiver to actuate the unloading mechanism. Without this air pressure, the unloading system will fail. However, with no load on the compressor, it will still be able to start with little or no difficulty, as the compressor will not be overloaded.
The other options are incorrect because A) the unloading system will not function normally, B) the safety interlock will not stop the drive motor since the unloading system is not working, and D) the drive motor will not trip the circuit breaker, as the compressor will not be overloaded without any load.
Related Questions
#19 After coolers are used with air compressors to _______________.#20 The device shown in the illustration is used to _______________. Illustration GS-0029#22 Over pressurization of an air compressor intercooler is prevented by the _______________.#23 The air charge leaving an intercooler, or after cooler of an air compressor can be expected to be _______________.#24 Which of the listed valve types is typically used for suction and discharge valves on modern low-pressure air compressors?