Grade 1 Mechanical Technologist Study Guide 2023 Questions & Answers ( A+ Graded 100% Verified)

What is wet stacking and how can it be prevented? {Ans: It is unburned fuel collecting in the exhaust due to light or no load conditions.}A DAFT is an acronym meaning: {Ans: Dissolved Air Flotation Thickener.}Which of the following valves is unsuitable for high-pressure flow? {Ans: A needle valve}To check flywheel face runout, where should the dial indicator be positioned? {Ans: The base on the bell housing and pointer on the flywheel face.}A sodium hypochlorite tank's full working capacity is 23,000 gallons. Its current level is at 1,200 gallons. How many gallons does the delivery driver need to add to bring it to 70% capacity? {Ans: Solution: 23,000 gallons max capacity x 70% desired capacity = 16,100 gallons desired. 16,100 gallons desired - 1,200 gallons current level 14,900 gallons needed to add}Which welding process is most commonly used for small pipe maintenance welding? {Ans: Oxyacetylene gas welding}