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 45.
Σελίδα 30
... give instructions regarding the use of formulas If the reader is not familiar with their use , he should carefully study this section . A formula is an abridged statement of a general rule 30 MECHANICS ' POCKET MEMORANDA .
... give instructions regarding the use of formulas If the reader is not familiar with their use , he should carefully study this section . A formula is an abridged statement of a general rule 30 MECHANICS ' POCKET MEMORANDA .
Σελίδα 79
... gives the M. E. P. For example , a double - acting engine 26x30 , making 80 revolu- tions per minute ( 80 R. P. M. ) , gives an indicator card , which being divided up and measured as shown in the figure , gives , for the total length ...
... gives the M. E. P. For example , a double - acting engine 26x30 , making 80 revolu- tions per minute ( 80 R. P. M. ) , gives an indicator card , which being divided up and measured as shown in the figure , gives , for the total length ...
Σελίδα 81
... give a dif- ferent horsepower whenever the conditions under which it is operated are changed ; or , in other words , the horsepower devel- oped depends largely upon the amount of coal burned per square foot of grate area per hour , the ...
... give a dif- ferent horsepower whenever the conditions under which it is operated are changed ; or , in other words , the horsepower devel- oped depends largely upon the amount of coal burned per square foot of grate area per hour , the ...
Σελίδα 83
... give a mean velocity Vm . Qa = Actual quantity discharged in cubic feet per second . Then , for an orifice in a thin plate , or a square - edged orifice ( the hole itself may be of any shape , triangular , square , circular , etc. , but ...
... give a mean velocity Vm . Qa = Actual quantity discharged in cubic feet per second . Then , for an orifice in a thin plate , or a square - edged orifice ( the hole itself may be of any shape , triangular , square , circular , etc. , but ...
Σελίδα 86
... give any required discharge in gallons per second , the total length of the pipe and the head being known , use the following formula , which will give values accurate enough for practical purposes : 5 d = 1.229 1Q2 h EXAMPLE . - What ...
... give any required discharge in gallons per second , the total length of the pipe and the head being known , use the following formula , which will give values accurate enough for practical purposes : 5 d = 1.229 1Q2 h EXAMPLE . - What ...
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...