Manual of Rules, Tables & Data for Mechanical Engineers ... |
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Common terms and phrases
actual ratio angle atmosphere average axis bars beam boiler breaking weight calculated carbon cast iron cent centre clearance coal coefficient coke column combustion compression condensed constant cubic feet cubic foot cubic metre cwts deflection density depth diagonal divide elastic strength engine equal evaporated Fahrenheit flange foot of grate foot-pounds force formula fuel gallons gases given horse-power hour hydrogen hyp log inches in diameter kilogramme length load logarithm MEASURES metal millimetres minute Multiply pipe piston plates pounds proportion pulleys quantity quotient radius radius of gyration ratio of expansion reduced resistance RULE second cylinder sectional area shaft specific gravity specific heat specimens square feet square foot square inch steam steel stress stroke sulphur surface surface-ratio temperature tensile stress tons per square total heat transverse strength tubes units of heat vapour velocity volume water-tube boiler wood wrought iron yards ΙΟ
Popular passages
Page 16 - To find the area of a segment of a circle: Find the area of the sector which has the same arc, and also the area of the triangle formed by the chord of the segment and the radii of the sector.
Page 15 - To find the perpendicular when the side is given — as radius to tangent of half-angle at perimeter (see table No. i), so is half length of side to perpendicular. Or, multiply the square of a side of any regular polygon by the corresponding area in the following table: — • TABLE No. i. — ANGLES AND AREAS OF REGULAR POLYGONS. To find the circumference of a circle. Multiply the diameter by 3 • 1 4 1 6.
Page 191 - Gold and silver. Gold and iron. Gold and lead. Gold and copper. Gold and iridium. Gold and nickel. Silver and copper. Iron and bismuth. Iron and antimony. Iron and lead. Tin and lead. Tin and palladium. Tin and antimony. Nickel and arsenic. Zinc and antimony.
Page 19 - RULE.* To the sum of the areas of the two ends add four times the area of a section parallel to and equally distant from both ends, and this last sum multiplied by £ of the height will give the solidity.
Page 15 - To find the area of a triangle, multiply the base by the perpendicular height, and take half the product.
Page 873 - ... extent of a perfect vacuum. In flowing through a nozzle of the best form, the steam expands to the external pressure, and to the volume due to this pressure, so long as it is not less than 58 per cent of the internal pressure. For an external pressure of 58 per cent, and for lower percentages, the ratio of expansion is 1 to 1.624.
Page 14 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Page 15 - To find the area of a trapezoid, multiply half the sum of the parallel sides by the perpendicular distance between them ; the product will be the area.
Page 114 - British standard temperature. 212° or 100° = the boiling point, under one atmosphere. The temperature 62° F. is the temperature of water used in calculating the specific gravity of bodies, with respect to the gravity or density of water as a basis, or as unity.