Question 540Steam Plants - Assistant Engineer70% to pass
A Kingsbury, or pivot shoe type thrust bearing, can bear much greater loads per square inch of working surface than can parallel surface bearings because provisions are made in the Kingsbury bearing _______________.
AI Explanation
The correct answer is D.
The Kingsbury or pivot shoe type thrust bearing can bear much greater loads per square inch of working surface compared to parallel surface bearings because the design allows the shoes to tilt slightly, thereby forming a wedge-shaped oil film under a thrust load. This wedge-shaped oil film generates high pressure, which enables the bearing to support greater loads without excessive wear or failure.
The other options are incorrect because they do not directly address the key reason for the superior load-carrying capacity of the Kingsbury bearing design. Options A, B, and C describe other features or adjustments, but do not explain the specific mechanism of the tilting shoes that creates the wedge-shaped oil film.
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