Bergen's Marine Engineer and Guide-Book to the Board of Trade Examinations for Certificates of Competency as First and Second Class Engineers; With Illustrated Answers to the Elementary Questions
Bergen's Marine Engineer and Guide-Book to the Board of Trade Examinations for Certificates of Competency as First and Second Class Engineers; With Illustrated Answers to the Elementary Questions
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1884 Excerpt: ...feed water is continuously being blown off; what is the saltness of the water in the boiler? Answer 7-2 ounces. 6. If one ton stretch a bar of iron 1 inch in 19000 inches; what will 10 tons stretch a bar 25 feet long? Answer-1578 inches. 7. Four boilers with 8 furnaces in each, there are 2 lengths of bars, and 14 bars ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1884 Excerpt: ...feed water is continuously being blown off; what is the saltness of the water in the boiler? Answer 7-2 ounces. 6. If one ton stretch a bar of iron 1 inch in 19000 inches; what will 10 tons stretch a bar 25 feet long? Answer-1578 inches. 7. Four boilers with 8 furnaces in each, there are 2 lengths of bars, and 14 bars in each length, and each bar weighs 50 lbs.; what would a full set cost at 7s. per cwt.? Answer 52 10s. 8. The counter is set at noon to-day at 000725, and to-morrow at noon it is found to stand at 108725; how many revolutions has the engine made per minute? Answer 75 revolutions per minute. 9. The consumption of coals per day is 80 tons, and each watch of 4 hours throws overboard 84 baskets of ashes, each weighing 50 lbs.; what percentage of coal is lost as ashes? 10. The bolts of a cylinder cover are to be spaced not more than 8 inches apart, centre to centre on the circumference of the pitch circle, diameter of cover is 86 inches, and the centres of bolts H inch from the edge of the cover; how many bolts will there be in the cover? 11. The consumption per day is 12 tons of coal, the average I.H.P. is 450; what is the consumption per I.H.P. per hour? Answer 2-48 lbs. 12. From the 14th August at 10 a.m. to 6th October at 4 p.m. the consumption was 582 tons and the distance gone was 10117i knots; what was the mean speed and mean consumption per day? Answer 15-166 per cent, lost as ashes. Answer 84-5576 bolts. FIBST CLASS ENGINEEBS. EXERCISE 1. 1. 675 is to what number as 4 is to 9? 4: 9:: 675: 1518-75. Answer 1518-75. 2. Find the value of 20-59? 20-59 Answer 20 lis. 9-6d. 20 8. Express the sum of-525 and-625 as a vulgar fraction? 525,625 1-150 = = 1&. Answer 1&. 4. (840--16) + 2x6. Answer 80. 5. A compound...
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