The Mechanical Engineer's Pocket-book: A Reference Book of Rules, Tables, Data, and Formulae, for the Use of Engineers, Mechanics, and StudentsWiley, 1902 - 1129 páginas |
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Página 68
... gives the greater angle , and half the difference subtracted from half the sum gives the less angle . The third side is then found by Theorem I. Another method : Given the sides c , b , and the included angle A , to find the remaining ...
... gives the greater angle , and half the difference subtracted from half the sum gives the less angle . The third side is then found by Theorem I. Another method : Given the sides c , b , and the included angle A , to find the remaining ...
Página 76
... gives a negative result will correspond to a maximum value of the function , and each which gives a positive result will correspond to a minimum value . EXAMPLE . To find the value of x which will render the function y a maximum or ...
... gives a negative result will correspond to a maximum value of the function , and each which gives a positive result will correspond to a minimum value . EXAMPLE . To find the value of x which will render the function y a maximum or ...
Página 206
... give 85 per cent of a full thread , expe rience showing that the metal of wrought nuts will then crowd into the ... gives 6 to 7 thousandths of an inch allow- ance for fit and wear of tap . Just above the threaded portion of the tap ...
... give 85 per cent of a full thread , expe rience showing that the metal of wrought nuts will then crowd into the ... gives 6 to 7 thousandths of an inch allow- ance for fit and wear of tap . Just above the threaded portion of the tap ...
Página 241
... gives the momentary maximum stress . Substituting this value of Q , there results h = e ( 1 + √ / 1 + 224 ) , which is the value of the momentary maximum elongation . ( 2 ) A shock results when the force P , before its action on the ...
... gives the momentary maximum stress . Substituting this value of Q , there results h = e ( 1 + √ / 1 + 224 ) , which is the value of the momentary maximum elongation . ( 2 ) A shock results when the force P , before its action on the ...
Página 247
... gives , For mild steel , f = 67,000 lbs . , a = 1 / 22,400 , For strong steel , f 114,000 lbs , a = 1 / 14,400 Prof. Burr considers these only loose approximations for the ultimate resistances . See his formulæ on p . 259 . For dry ...
... gives , For mild steel , f = 67,000 lbs . , a = 1 / 22,400 , For strong steel , f 114,000 lbs , a = 1 / 14,400 Prof. Burr considers these only loose approximations for the ultimate resistances . See his formulæ on p . 259 . For dry ...
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Otras ediciones - Ver todas
Términos y frases comunes
abscissa altitude Avoirdupois axes base bisect Bolt cent centre chord circle circular circular mils Circum circumference column compression coördinates copper Cube Root cubic foot cubic inches curve cycloid cylinder decimal describe Diam diameter difference differential coefficient distance divide draw elastic limit ellipse equal equation exponent find the area Flange formula frustum function gallons Gauge half the sum hyperbola integral iron length load logarithm maximum metal metre millimetres Mils modulus Naperian ordinate parabola parallel perpendicular pipe plane plate polygon pounds pressure proportional quantity quotient radii radius radius of gyration Recipro resistance right angles right-angled triangle rope segment side sine Specific Gravity square inch square root steel straight line STRENGTH OF MATERIALS stress subtract surface tangent tensile strength term tests Thickness thread transverse axis variable volume wire
Pasajes populares
Página 20 - OF TIME. 60 Seconds = 1 Minute 60 Minutes = 1 Hour 24 Hours = 1 Day 7 Days = 1 Week 28 Days = 1 Lunar Month...
Página 2 - To change a mixed number to an Improper fraction.— Multiply the whole number by the denominator of the fraction; to the product add the numerator; place the sum over the denominator: 1% = 15/8.
Página 68 - In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Página 34 - Divide the first term of the dividend by the first term of the divisor, and write the result as the first term of the quotient. Multiply the whole divisor by the first term of the quotient, and subtract the product from the dividend.
Página 691 - See that the boiler is thoroughly heated before the trial to its usual working temperature. If the boiler is new and of a form provided with a brick setting, it should be in regular use at least a week before the trial, so as to dry and heat the walls. If it has been laid off and become cold, it should be worked before the trial until the walls are well heated. VII. The boiler and connections should be proved to be free from leaks before beginning a test, and all water connections, including- blow...
Página 692 - The boiler being thoroughly heated by a preliminary run, the fires are to be burned low and well cleaned. Note the amount of coal left on the grate as nearly as it can be estimated; note the pressure of steam and the water level.
Página 479 - Avogadro's hypothesis that equal volumes of all gases under the same conditions of temperature and pressure contain the same number of molecules...
Página 694 - Calorific Tests and Analysis of Coal.— The quality of the fuel should be determined either by heat test or by analysis, or by both. The rational method of determining the total heat of combustion is to burn the sample of coal in an atmosphere of oxygen gas, the coal to be sampled as directed in Article XV. of this Code. The chemical analysis of the coal should be made only by an expert chemist. The total heat of combustion computed from the results of the ultimate analysis...
Página 692 - The water-level should be as nearly as possible the same as at the beginning of the test. If it is not the same, a correction should be made by computation, and not by operating pump after test is completed.
Página 398 - For the purposes of this specification, the yield point shall be determined by the careful observation of the drop of the beam or halt in the gauge of the testing machine.