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EK-Motor : 2013/MAR/03 – 2020/JUL/01 – 2021/MAR/01
Question
Q1. With reference to diesel engine crankshafts:
(a) Explain the causes and effects of torsional vibrations; (4)
(b) Explain the term critical speed, starting why the engine should not be continuously operated at this speed. (6)
(c) Explain the term fatigue cracking, starting with reasons, TWO factors which have an influence on the likelihood of fatigue cracking. (6)
Asked in Year/Month/Ques No.