Question 417Motor Plants - Assistant Engineer

The correct answer is C) The normal play on both sides of the shaft will be one tenth of a millimeter. This is the correct answer because the typical bearing clearance for a marine shaft bearing is around 0.1 mm (one tenth of a millimeter) on each side of the shaft, which allows for proper lubrication and movement of the shaft within the bearing. This clearance is a standard specification that is commonly used in the design and manufacture of marine propulsion systems. The other answer choices are incorrect because: A) The clearance is not determined by the hydrodynamic wedge, but rather by engineering specifications. B) The tolerances are standardized and do not vary significantly between manufacturers. D) The clearance of one twentieth of a millimeter (0.05 mm) is too small and not the normal specification for this type of bearing.