Question 344General Subjects - Assistant Engineer70% to pass
What statement is true concerning the purpose of an independent main thrust bearing where used?
AI Explanation
The correct answer is C. The main purpose of the main thrust bearing is to absorb axial thrust and to transmit the axial thrust developed by the propeller to the ship's hull.
The main thrust bearing is designed to counteract the axial forces generated by the propeller, which tend to push the shaft forward or backward. By absorbing and transmitting this axial thrust to the ship's hull, the main thrust bearing ensures the proper alignment and positioning of the propeller shaft, which is critical for the efficient and safe operation of the vessel.
The other options are incorrect because they do not accurately describe the primary function of the main thrust bearing. Option A refers to maintaining shaft alignment, which is a secondary function. Options B and D mention radial thrust, which is not the main purpose of the main thrust bearing.
Related Questions
#342 What statement is true concerning the lubrication of line shaft bearings? #343 If a main propulsion shafting arrangement is such that no strut or strut bearing is required, what is an alternative name given to the propeller shaft, which is the section of shafting that the propeller is attached to? #345 What statement is true concerning the arrangement of line shaft bearing housings? #346 What type of bearing is most generally used as an independent main thrust block on merchant ships? #347 What type of propulsor is typically used in electric motor driven, transverse, tunnel bow thrusters to limit the starting current of the single speed drive motor?