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 32
... usually expressed as 2.3026 , and sometimes as 2.3 . Only the common system of logarithms will be considered here . Since in the common system the base is 10 , it follows that , since 101 = 10 , 102 = 100 , 103 = 1,000 , etc. , the ...
... usually expressed as 2.3026 , and sometimes as 2.3 . Only the common system of logarithms will be considered here . Since in the common system the base is 10 , it follows that , since 101 = 10 , 102 = 100 , 103 = 1,000 , etc. , the ...
Σελίδα 33
... usually con- sists of two parts : a whole number , called the characteristic , and a fraction , called the mantissa . The mantissa is always expressed as a decimal . For example , to produce 20 , 10 must have an exponent of ...
... usually con- sists of two parts : a whole number , called the characteristic , and a fraction , called the mantissa . The mantissa is always expressed as a decimal . For example , to produce 20 , 10 must have an exponent of ...
Σελίδα 98
... ( usually assumed in practice to be 14.7 pounds per square inch , when a barometer is not at hand ) . If this be represented by p , how shall we represent the gauge pressure ? Since the absolute pressure is always greater than the gauge ...
... ( usually assumed in practice to be 14.7 pounds per square inch , when a barometer is not at hand ) . If this be represented by p , how shall we represent the gauge pressure ? Since the absolute pressure is always greater than the gauge ...
Σελίδα 125
... usually designated by the letter I. Formulas for the values of I about an axis of rotation passing through the center of gravity of the section are given for various forms of sections in Table V , page 153 . The moment of inertia about ...
... usually designated by the letter I. Formulas for the values of I about an axis of rotation passing through the center of gravity of the section are given for various forms of sections in Table V , page 153 . The moment of inertia about ...
Σελίδα 133
... usually obtained when the axis is perpen- dicular to the least diameter or side of the column . The various relations between these quantities may be concisely expressed by the following formulas , in which A area of section ( or weight ...
... usually obtained when the axis is perpen- dicular to the least diameter or side of the column . The various relations between these quantities may be concisely expressed by the following formulas , in which A area of section ( or weight ...
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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...