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 3
... figures so that the decimal points are one above the other , then proceed as in simple addition : 18.75 +012 = 18.762 . To subtract decimals . - Set down the figures so that the decimal points are one above the other , then proceed as ...
... figures so that the decimal points are one above the other , then proceed as in simple addition : 18.75 +012 = 18.762 . To subtract decimals . - Set down the figures so that the decimal points are one above the other , then proceed as ...
Página 5
... figures that do not recur from the whole decimal in- cluding one set of recurring figures ; set down the remainder as the numer- ator of the fraction , and as many nines as there are recurring figures , fol- lowed by as many ciphers as ...
... figures that do not recur from the whole decimal in- cluding one set of recurring figures ; set down the remainder as the numer- ator of the fraction , and as many nines as there are recurring figures , fol- lowed by as many ciphers as ...
Página 8
... figure in the quotient . Subtract its square from the left - hand period , and to the remainder annex the two figures of the second period for a dividend . Double the first figure of the quotient for a partial divisor : find how many ...
... figure in the quotient . Subtract its square from the left - hand period , and to the remainder annex the two figures of the second period for a dividend . Double the first figure of the quotient for a partial divisor : find how many ...
Página 9
... figure of the root - that is , square the two figures of the root already found ; multiply by 300 for a trial divisor , etc. If at any time the trial divisor is greater than the dividend , bring down an- other period of 3 figures , and ...
... figure of the root - that is , square the two figures of the root already found ; multiply by 300 for a trial divisor , etc. If at any time the trial divisor is greater than the dividend , bring down an- other period of 3 figures , and ...
Página 10
... figure should be 7. Should we take these eight figures for trial root we should obtain at least fifteen figures of the root correct . To Extract a Higher Root than the Cube . - The fourth root is the square root of the square root ; the ...
... figure should be 7. Should we take these eight figures for trial root we should obtain at least fifteen figures of the root correct . To Extract a Higher Root than the Cube . - The fourth root is the square root of the square root ; the ...
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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.