Question 69Motor Plants - Assistant Engineer

The correct answer is D) remove most contaminants present in the air supply. The device represented by the symbol "B" in the illustration MO-0115 is an air filter, which is used to remove most contaminants from the air supply. This is a critical component in compressed air systems, as the air needs to be clean and free of particulates, oil, and other impurities to ensure the proper functioning and safety of the system. The other answer choices are incorrect because: A) does not describe the purpose of the air filter, B) refers to lubricating the air supply, which is not the function of the air filter, and C) refers to reducing the temperature of the air supply, which is also not the purpose of the air filter.