Question 20General Subjects - Assistant Engineer
70% to passThe device shown in the illustration is used to _______________. Illustration GS-0029
Areduce the pressure in the ship's service air system
Bmaintain correct tension on the drive belts while the compressor is in operation
Cgrind sewage prior to entering the sewage treatment plant
Dunload the cylinders of an air compressor
AI Explanation
The correct answer is D) unload the cylinders of an air compressor. The device shown in the illustration is an air compressor unloader, which is used to release the pressure in the cylinders of an air compressor when it is not in operation. This prevents the compressor from building up excessive pressure, which could damage the system. The other answer choices are incorrect because: A) is not the function of this device, B) refers to a different type of component, and C) describes a function unrelated to an air compressor.
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