Mechanics' Pocket Memoranda: A Convenient Pocketbook for All Persons Interested in Mechanical Engineering, Steam Engineering, Electrical Engineering, Railroad Engineering, Bridge Engineering, Architecture, Plumbing, Heating and Ventilation, Gas Fitting, Etc., EtcColliery Engineer Company, 1897 - 318 σελίδες |
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Αποτελέσματα 1 - 5 από τα 33.
Σελίδα 32
... usually written with the letter whose value is to be obtained standing alone at the left of the sign of equality . To apply a formula , therefore , we have simply to substitute the given values for the letters on the right of the sign ...
... usually written with the letter whose value is to be obtained standing alone at the left of the sign of equality . To apply a formula , therefore , we have simply to substitute the given values for the letters on the right of the sign ...
Σελίδα 49
... usually taken as 6 for wrought iron and 12 for cast iron . For thin pipes pdf = 2t S ( 7 ) . For thick pipes or cylinders . St pf = - r + t ( 8 ) . Ropes and Chains . D = Diameter in inches of the rope = diameter of iron from which the ...
... usually taken as 6 for wrought iron and 12 for cast iron . For thin pipes pdf = 2t S ( 7 ) . For thick pipes or cylinders . St pf = - r + t ( 8 ) . Ropes and Chains . D = Diameter in inches of the rope = diameter of iron from which the ...
Σελίδα 55
... 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 45 . 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 45 . The moment of inertia about ...
Σελίδα 62
... column ; this condition is usually obtained when the axis is perpendicular to the least diameter or side of the column . The various relations between these quantities may be con- cisely 62 MECHANICS ' POCKET MEMORANDA .
... column ; this condition is usually obtained when the axis is perpendicular to the least diameter or side of the column . The various relations between these quantities may be con- cisely 62 MECHANICS ' POCKET MEMORANDA .
Σελίδα 65
... usually considered to pass through the center of gravity of the section . If the moment of resistance is multiplied by the amount of stress which may be allowed per sq . in . upon the extreme fiber , the product will represent the ...
... usually considered to pass through the center of gravity of the section . If the moment of resistance is multiplied by the amount of stress which may be allowed per sq . in . upon the extreme fiber , the product will represent the ...
Συχνά εμφανιζόμενοι όροι και φράσεις
amperes armature battery beam boiler bolts brick cast iron center of gravity center of percussion change gear circle circuit circular mils Circum column connected crank cubic feet cylinder Diam diameter direction discharge divided draw dynamo electromotive force engine equal feet per second figure following table formula fraction frog distance gauge given horsepower inertia lathe lead screw length main track measured meter minute moment of inertia motor multiplied nails number of teeth number of threads ohms perpendicular pipe piston pitch pounds pressure proportions pulley radiating radius radius of gyration rail resistance revolutions per minute rope shaft shown in Fig side speed square inch station steam switch tangent deflection temperature thickness tion triangle turnout curve valve velocity vernier vertical volts wall weight wire wrought iron Zinc
Δημοφιλή αποσπάσματα
Σελίδα 26 - 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 hektometer (Hm.) 10 hektometers = 1 kilometer (Km.) 10 kilometers = 1 myriameter (Mm.) Measures of Surface 100 sq.
Σελίδα 65 - The circular pitch is the distance along the pitch circle from the center of one tooth to the center of the next.
Σελίδα 70 - The horse power of a steam engine is given by the equation , plan = ~ where p = mean effective pressure in pounds per square inch, l = length of stroke in feet, a = area of piston in square inches, n = number of strokes per minute, or twice the number of revolutions per minute.
Σελίδα 56 - If the distance from the axis of rotation to the center of percussion of the pendulum be denoted by I, then ft=/ (1 — cos.
Σελίδα 26 - 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...
Σελίδα 55 - The radius of gyration is the distance from the axis of rotation to the center of gyration.
Σελίδα 49 - Show that the moment of inertia of a body about any axis is equal to the moment of inertia about a parallel axis through the center of mass plus the product of the mass of the body and the square of the distance between the axes.
Σελίδα 138 - The thumb, forefinger, and middle finger of the left hand are held at right angles to each other ; then if the forefinger shows the direction of the lines of force, and the middle finger the direction of the current, the thumb will show the direction of motion.
Σελίδα 242 - Divide the difference in temperature between that at which the room is to be kept and the coldest outside atmosphere, by the difference between the temperature of the steam pipes and that at which you wish to keep the room, and the quotient will be the square feet or fraction thereof of plate or pipe surface to each square foot of glass, or its equivalent in wall surface.
Σελίδα 26 - OF WEIGHT 10 milligrams (mg.) = 1 centigram (eg.) 10 centigrams = 1 decigram (dg.) 10 decigrams = 1 gram (g.) 10 grams = 1 dekagram (Dg.) 10 dekagrams = 1 hektogram (Hg.) 10 hektograms = 1 kilogram (Kg...