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 44.
Σελίδα 29
... necessary to use all the figures of the different decimals , four deci- mal places being all that are commonly used ; it is only in very 1828.8 121.92 21.336 .3048 .2438 exact calculations that all seven MECHANICS ' POCKET MEMORANDA . 29.
... necessary to use all the figures of the different decimals , four deci- mal places being all that are commonly used ; it is only in very 1828.8 121.92 21.336 .3048 .2438 exact calculations that all seven MECHANICS ' POCKET MEMORANDA . 29.
Σελίδα 30
... figure 6 ( the first figure of the given number ) we find opposite it in the third column , which is headed " Feet to Meters , " the number 1.8287838 . Now using but four decimal places and increasing the figure in the fourth deci- mal ...
... figure 6 ( the first figure of the given number ) we find opposite it in the third column , which is headed " Feet to Meters , " the number 1.8287838 . Now using but four decimal places and increasing the figure in the fourth deci- mal ...
Σελίδα 31
... figures , as addition , instead of multiplication , would be indicated . Thus , 32 means 30 + 2 , not 3 X 2 . Parentheses ( ) , brackets [ ] , brace lum all signify that the quantities and the vincu- enclosed by them are to be ...
... figures , as addition , instead of multiplication , would be indicated . Thus , 32 means 30 + 2 , not 3 X 2 . Parentheses ( ) , brackets [ ] , brace lum all signify that the quantities and the vincu- enclosed by them are to be ...
Σελίδα 34
... figure of the root , does not exceed the first period ; the number thus obtained will be the first figure of the root . III . Raise the first figure of the root to the power indicated by an exponent having as many units as the index figure ...
... figure of the root , does not exceed the first period ; the number thus obtained will be the first figure of the root . III . Raise the first figure of the root to the power indicated by an exponent having as many units as the index figure ...
Σελίδα 35
... figure of the root . VIII . Proceed as in VI and VII for the fourth figure of the root , and so on for more figures , if desired . NOTE . The result obtained in V may be too large ; if so , it will be made evident in VI when getting the ...
... figure of the root . VIII . Proceed as in VI and VII for the fourth figure of the root , and so on for more figures , if desired . NOTE . The result obtained in V may be too large ; if so , it will be made evident in VI when getting 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...