The Mechanics' Handbook: A Convenient Reference Book for All Persons Interested in Mechanical Engineering, Steam Engineering, Electrical Engineering, Railroad Engineering, Hydraulic Engineering, Bridge Engineering, EtcInternational Textbook Company, 1904 - 218 σελίδες |
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Σελίδα 7
... tion . All the figures of the values given are not required . four or five digits being all that are commonly used ; it is only in very exact calculations that all the digits are necessary . Using table , proceed as follows : Change ...
... tion . All the figures of the values given are not required . four or five digits being all that are commonly used ; it is only in very exact calculations that all the digits are necessary . Using table , proceed as follows : Change ...
Σελίδα 28
... tion to its latent heat , each pound of steam on condensing must give up an additional amount of heat in falling to 130 ° . Since the original temperature of the steam was 296.805 ° F. ( see table ) , each pound gives up by its fall of ...
... tion to its latent heat , each pound of steam on condensing must give up an additional amount of heat in falling to 130 ° . Since the original temperature of the steam was 296.805 ° F. ( see table ) , each pound gives up by its fall of ...
Σελίδα 69
... tion is therefore likely to be inexact . The method to be employed when dealing with these functions may be shown by an example : Required , the tangent of 76 ° 34 ' . Since this angle is greater than 45 ° , we look for it in the column ...
... tion is therefore likely to be inexact . The method to be employed when dealing with these functions may be shown by an example : Required , the tangent of 76 ° 34 ' . Since this angle is greater than 45 ° , we look for it in the column ...
Σελίδα 95
... tion , the brace would be put outside , the brackets next , the parenthesis next , and the vinculum inside . For example , { [ ( 20 −5 ÷ 3 ) × 9-21 ] ÷ 8 × 12 . The reason for using the brace in this last instance will be explained ...
... tion , the brace would be put outside , the brackets next , the parenthesis next , and the vinculum inside . For example , { [ ( 20 −5 ÷ 3 ) × 9-21 ] ÷ 8 × 12 . The reason for using the brace in this last instance will be explained ...
Σελίδα 100
... tion that is required to be performed . 660 But , since 7+ 25 660 for 7 + the heavy 25 line becomes necessary in order to make the resulting expres- 175 + 660 = if we substitute 25 175 + 660 25 sion clear . Thus , 160 160 160 660 175 + ...
... tion that is required to be performed . 660 But , since 7+ 25 660 for 7 + the heavy 25 line becomes necessary in order to make the resulting expres- 175 + 660 = if we substitute 25 175 + 660 25 sion clear . Thus , 160 160 160 660 175 + ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
amperes armature battery beam boiler bolts center of gravity center of percussion change gear chord deflection circle circuit column headed corresponding cubic cylinder decimal point Diam diameter difference divided draw dynamo electromotive force engine enrolled equal feet formula fraction frog distance gauge gear h given number heat Hence horsepower inertia iron lead screw Leclanché cells length mantissa mean effective pressure measured moment of inertia motor multiplied number of teeth number of threads obtained ohms P. P. TABLE perpendicular pipe piston pitch pounds pressure produce pulley quantities quotient radius radius of gyration rail resistance root rope shaft shown in Fig side significant figures square inch steam subtracted surface switch TABLE Continued tangent deflection temperature three figures tion triangle turnout curve valve velocity vertical volts weight wire wrought iron Zinc
Δημοφιλή αποσπάσματα
Σελίδα 2 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq. mi.) Cubic Measure 1728 cubic inches (cu.
Σελίδα 3 - TROY WEIGHT. 24 grains (gr.) 1 pennyweight (pwt.) 20 pennyweights, 1 ounce (oz.) 12 ounces ... 1 pound (Ib.) Troy weight is used in weighing gold, silver, precious stones, etc. APOTHECARIES
Σελίδα 3 - LIQUID MEASURE 4 gills (gi.) = 1 pint (pt.) 2 pints = 1 quart (qt.) 4 quarts = 1 gallon (gal...
Σελίδα 2 - SURVEYORS' SQUARE MEASURE. 144. This measure is used by surveyors in computing the area or contents of land. TABLE. 625 Square Links (sq. 1. ) make 1 Pole P. 16 Poles " 1 Square Chain . sq. ch. 10 Square Chains " 1 Acre A. 640 Acres " 1 Square Mile . . sq. mi. 36 Square Miles (6 miles square)
Σελίδα 2 - CUBIC MEASURE 1728 cubic inches (cu. in.) = 1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu.
Σελίδα 6 - Measures of Capacity 10 milliliters (ml) =1 centiliter cl 10 centiliters =1 deciliter dl 10 deciliters =1 liter 1 10 liters =1 dekaliter Dl 10 dekaliters =1 hektoliter HI 10 hektoliters =1 kiloliter Kl NOTE — The liter is equal to the volume occupied by 1 cubic decimeter.
Σελίδα 25 - This is called the total heat of vaporization, or simply total heat. It is plain that the total heat is the sum of the heat of the liquid and the latent heat. That is, total heat = heat of liquid + latent heat.
Σελίδα 42 - To Divide One Number by Another, Subtract the logarithm of the divisor from the logarithm of the dividend, and obtain the antilogarithm of the difference.
Σελίδα 5 - Measures of Length. 10 millimeters (mm.) 1 centimeter (cm.) 10 centimeters 1 decimeter (dm.) 10 decimeters 1 meter (m.) 10 meters 1 dekameter (Dm.) 10 dekameters 1 hectometer (Hm.) 10 hectometers 1 kilometer (Km.) 10 kilometers 1 myriameter (Mm.) 1181.
Σελίδα 189 - Fig. /», the valve is shown In its extreme position at the right. The distance marked m is the maximum port opening. It matters not whether the outer edge of the valve travels beyond the inner edge of the port or falls short of it, as in the...