Reed's Engineers' hand book to the Local marine board examinations for certificates of competency as first and second class engineers - Softcover
Synopsis
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. 1864 Excerpt: ...ENGINEERS. 1. Express in figures--Two thousand and ninety. Answer, 2,090. 2. Add together G4 tons 15 cwt. 1 qr. 20 lbs., 14 tons 5 cwt. 0 qrs. 14 lbs. and 7 tons 18 cwt. 3 qrs. 12 lbs., and multiply the sum by 6. Answer, 80 tons 19 cwt. 1 qr. 18 lbs.; and 521 tons 10 ewt. 1 qr. 24 lbs, 3. What is the product of 17-6 X 1-54 X 1-006? Answer, 27-260024. 4. Divide the product of (3) by 9-846. Answer, 2-769 + 5. The quantity of coal on board on leaving port is 146 tons; the consumption in 10 days is 107 tons 14 cwt. 2 qrs. 171bs.; what quantity remains on board? Answer, 38 tons 5 cwt. 1 qr. 11 lbs. 6. A coal bunker is 7 feet 4 inches long, 9 feet 8 inches high, and 3 feet 6 inches wide; required the quantity of coal it will contain at 18 cubic feet per ton? (By decimals.) Answer, 13 tons 15 cwt. 2 qrs. 17 lbs. 7. If the consumption of coal is 36 tons per day to produce a speed of 10 knots an hour, what is the consumption in a voyage of 360 knots? Answer, 54 tons. 8. The pressure of steam on the piston is 12 lbs. per square inch above the atmosphere, and the barometer on the condenser shows 26 inches of mercury; required the effective pressure per square inch on the piston? Answer, 10 lbs. above the atmosphere. 9. What pressure of steam in the boiler is necessary to blow off the brine through the blow-off cocks, the bottom of the boiler being 12 feet below the water-line of the ship, allowing a column of water 2-305 feet high to equal 1 lb.? Answer, 5-2 lbs. 10. How many revolutions must an engine make to drive a paddle-wheel 10 knots per hour, the diameter of wheel being 15 feet, and the knot 0080 feet? Answer, 1290-2 revolutions. 11. The pitch of a screw is 26 feet; how many revolutions must it make to advance 12-5 knots per hour, a knot being 6080 feet? Answer...
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