Question 340General Subjects - Assistant Engineer
70% to passConcerning the arrangements of a disk-oiled line shaft bearing, what statement is true?
AThe disk is clamped to the shaft with the lowermost part immersed in oil, and the distribution of the oil to the bearing is by the action of an oil wick.
BThe disk fits loosely on the shaft with the lowermost part immersed in oil, and the distribution of the oil to the bearing is by wick action.
CThe disk is clamped to the shaft with the lowermost part immersed in oil, and the distribution of the oil to the bearing is by the action of an oil scraper.
DThe disk fits loosely on the shaft with the lowermost part immersed in oil, and the distribution of the oil to the bearing is similar to the action of oiling rings.
AI Explanation
The correct answer is C. In a disk-oiled line shaft bearing, the disk is clamped to the shaft with the lowermost part immersed in oil, and the distribution of the oil to the bearing is by the action of an oil scraper. As the shaft rotates, the disk dips into the oil reservoir and the oil is then distributed to the bearing surfaces by the scraping action of the disk. The other options are incorrect because: A) The distribution of oil is by the action of a wick, not a scraper. B) The disk is clamped to the shaft, not fitting loosely. D) The distribution is by the action of a scraper, not similar to oiling rings.
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