Bakers Powerplant Oral Test Updated 2024

Bakers Powerplant Oral Test Updated 2024 How are conventional reciprocating engines classified? - - They are classified according to cylinder arrangement or according to method of cooling what are the different types of piston rings? - - Compression rings, oil control rings, and scraper rings. what are the main causes of a cylinder having low compression? - - worn piston rings and poorly seated valves what is the purpose of the oil control rings? - - control the thickness of the oil film on the cylinder wall what may be the result of installing piston rings incorrectly? - - Excessive oil consumption. what type of piston rods are commonly found in radial engines? - - A master and articulating rod assembly. what type of bearings are in general use in recip engines? - - roller ball plain what is the indication of valve blowby? - - hissing or whistle when pulling the propeller through by hand what is the purpose of using more than one spring for valve closing? - - to reduce valve surging and floating what is the purpose of valve overlap - - It allows better volumetric efficiency and lowers cylinder operating temperatures describe the inspection you would give the valve springs during engine overhaul - - visually inspect for overheating, cracks and compression strength what is the purpose of using valves with sodium filled stems? - - sodium is an excellent heat conductor what causes engine sudden stoppage? - - Striking an object or engine seizure due to internal damage. What type inspection must be made after sudden stoppage of an engine? - - Complete engine tear down and inspection. what is the purpose of the crankshaft dynamic dampers used in aircraft engines? - - reduce torsional vibration how would you make a run out check in a