Ε Semester engineers

When vibrations occur in big-sized machines, operating under heavy loads, the ____________ of vibration ____________ because of large mass rotation and combustible gases forced inside the machinery. If the vibration levels _______________ beyond the minimal level, it may lead to _______________ or breakage of engine components. It is therefore important to_______ the vibration by some external arrangement. In a 2-stroke marine propulsion engine vibrations may cause wear of internal components, __________ of holding bolts, damage to the engine structure, and even failure of the crankshaft. , normally fitted on the top of the engine, transmits the engine’s rocking vibration to the ship’s hull. There are two basic criteria for determining _____________ in the level of vibrations: 1) The vibration level must not result is stress levels that may cause _____________ damage to the engine or the connected hull structure. 2) Vibration must not result in annoyance and/or (6) ___________ for the operating personnel.