With reference to diesel engine crankshafts: (a) Explain the causes and effects of torsional vibration; (4) (b) Explain the term critical speed, stating why the engine should not be continuously operated at this speed; (6) (c) Explain the term fatigue cracking, stating, with reasons, TWO factors which have an influence on the likelihood of fatigue cracking. (6)
Crankshaft
UKM Tuticorin 
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