A&P - Powerplant Oral (Jeppesen) questions with correct answers

What is the purpose of dynamic dampers on crankshafts? CORRECT ANSWER They reduce engine vibration. What types of bearings are generally found in reciprocating engines? CORRECT ANSWER Plain, ball and roller bearings. Are the connecting rods used in each cylinder of a radial engine the same? Explain. CORRECT ANSWER No. Radial engines use master and articulating rod assemblies. Name the different types of piston rings. CORRECT ANSWER Oil control, compression, and oil scraper. Where should piston ring gaps be installed relative to each other, and why? CORRECT ANSWER Compression ring gaps should be staggered so that they do not align. This prevents excessive blow-by. What could result from incorrectly installed piston rings? CORRECT ANSWER Excessive oil consumption. What purpose do oil control rings serve? CORRECT ANSWER They regulate the thickness of the oil film on the cylin