The engineers' manual of the Local marine examinations |
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Page 184
... piston is 226 1952 inches : find the diameter . Ex . 2. The circumference of a piston - rod is 28.2 inches : find the diameter . 3'1416 ) 226 * 1952 ( 72 inches . 219912 62832 62832 3 * 1416 ) 28 2000 ( 8.9 inches . 251328 306720 282744 ...
... piston is 226 1952 inches : find the diameter . Ex . 2. The circumference of a piston - rod is 28.2 inches : find the diameter . 3'1416 ) 226 * 1952 ( 72 inches . 219912 62832 62832 3 * 1416 ) 28 2000 ( 8.9 inches . 251328 306720 282744 ...
Page 185
... piston - rod is 6 inches , and that of the piston 33 inches ; com- pare the area of a section of the rod with the area of the piston . Since the areas of circles are as the square of their diameters , there areas will be as 462 : 3232 ...
... piston - rod is 6 inches , and that of the piston 33 inches ; com- pare the area of a section of the rod with the area of the piston . Since the areas of circles are as the square of their diameters , there areas will be as 462 : 3232 ...
Page 186
... piston containing 4809 square inches ? area Diameter V .7854 = V # 888 = √ 6122.99 78.2 inches , nearly . Ans . Ex . 4. The area of a piston is 40715136 square inches : find the diameter of the piston - rod , which is one - eighth of ...
... piston containing 4809 square inches ? area Diameter V .7854 = V # 888 = √ 6122.99 78.2 inches , nearly . Ans . Ex . 4. The area of a piston is 40715136 square inches : find the diameter of the piston - rod , which is one - eighth of ...
Page 243
... piston ( Rule LXXVI , pages 184-185 ) . 2 ° . Multiply the area of piston ( found above , No. 1 ° ) by the pressure per square inch ; the result is the pressure in pounds on the piston . 3 ° . Multiply twice the length of stroke in feet ...
... piston ( Rule LXXVI , pages 184-185 ) . 2 ° . Multiply the area of piston ( found above , No. 1 ° ) by the pressure per square inch ; the result is the pressure in pounds on the piston . 3 ° . Multiply twice the length of stroke in feet ...
Page 244
... piston 8 lbs . ? 602 x 7854 × 8 × 85 × 23 33000 Horse - power = 60 60 3600 7854 47124 23562 2827'44,00 area . 8 ... piston . Now , as the length of the stroke is 4 feet 3 inches , and the piston tra- verses it each way in each revolution ...
... piston 8 lbs . ? 602 x 7854 × 8 × 85 × 23 33000 Horse - power = 60 60 3600 7854 47124 23562 2827'44,00 area . 8 ... piston . Now , as the length of the stroke is 4 feet 3 inches , and the piston tra- verses it each way in each revolution ...
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The Engineers' Manual of the Local Marine Examinations Thomas Liddell Ainsley No preview available - 2015 |
Common terms and phrases
air-pump Answer area of valve atmospheric line boiler bolts bottom cent centre circumference coal condenser contains cost crank cubic feet cubic foot cubic inches cyphers decimal denominator diagram distance divide dividend divisor effective pressure engine equal EXAMINATION PAPER-No EXAMPLES FOR PRACTICE exhaust figure fraction gallons heat high pressure horse-power hundred inches diameter inches of mercury indicator indicator diagram length of stroke lever mean effective pressure miles multiplicand multiply piston pitch plates port pounds pressure cylinder pressure of steam pressure per square pump quantity quotient ratio of expansion reduce remainder revolutions per minute rivets RULE safety-valve screw seams shaft side slide-valve specific gravity square feet square inch stays steam is cut subtract surface surface condenser tank temperature thickness thousand throughout the stroke tons total pressure tube vacuum vulgar fraction weight whole numbers
Popular passages
Page 42 - An Improper Fraction is one whose numerator is equal to or greater than its denominator ; as, f , -J.
Page 63 - Thus, reducing the two fractions to a common denominator, we multiply the numerator of the dividend by the denominator of the divisor, and the numerator of. the divisor by the denominator of the dividend ; (Art.
Page 139 - RULE. from half the sum of the three sides, subtract each side separately; multiply the half sum and the three remainders together, and the square root of the product will be the area required.
Page 56 - It is however impossible to find such a fraction unless all the given fractions be first expressed with a common denominator : for, since the denominator of a fraction expresses the number of equal parts into which the unit is divided, it follows that in two fractions which have not a common denominator the unit is not divided into the same number of equal parts : therefore in endeavouring to...
Page 239 - ... stroke have been performed, and the steam be at the same time throttled in the steam pipe, the full pressure of the steam within the cylinder cannot be maintained except near the beginning of the stroke where the piston travels slowly ; for as the speed of the piston increases, the pressure necessarily subsides, until the piston approaches the other end of the cylinder, where the pressure would rise again but that the operation of the lap on the valve by this time has had the effect of closing...
Page 239 - ... on the exhausting side, the port before the piston will be closed before that behind it is opened ; and the interval between the closing of the one and the opening of the other, will depend on the quantity of lap on the exhausting side of the valve.