Sewage Treatment Worker Practice Test |64 Questions| With Correct Answers.

The function of an unloader valve on an air compressor is to {Ans: Release compression during starting}Which is not one of the essential parts of the belt conveyor? {Ans: The screw?The dew humidifier?}Which of the following services utilizes a positive displacement pump? {Ans: Boiler fuel oil pump system}Which of the following tools would give the most accurate measurement of the diameter of the shaft? {Ans: Outside micrometer}The schedule designation for a pipe refers to its {Ans: Wall thickness}What is the main reason for having a spare pump installed close to an active one for the same service? {Ans: Keep a smooth operation during equipment maintenance? Be prepared in case that extra capacity is needed?}