Practical Mathematics for the Engineer and ElectricianJoseph G. Branch publishing Company, 1912 - 143 σελίδες |
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Σελίδα 33
... amount of work done by the steam in one stroke of the piston , we must multiply the aver- age total pressure in pounds by the distance in feet which the piston travels in one stroke . For example , suppose the average total pressure is ...
... amount of work done by the steam in one stroke of the piston , we must multiply the aver- age total pressure in pounds by the distance in feet which the piston travels in one stroke . For example , suppose the average total pressure is ...
Σελίδα 40
... amount of coal per horse - power depends on the number of pounds of coal needed to evaporate one pound of water , and the num- ber of pounds of water that must be changed to steam every hour for one horse - power . The engineer should ...
... amount of coal per horse - power depends on the number of pounds of coal needed to evaporate one pound of water , and the num- ber of pounds of water that must be changed to steam every hour for one horse - power . The engineer should ...
Σελίδα 43
... amount of heat required to raise the temperature of one pound of water one degree Fahren- heit ; or , more strictly defined , it is the amount of heat required to raise one pound of water from 39 ° F. to 40 ° F. The unit of evaporation ...
... amount of heat required to raise the temperature of one pound of water one degree Fahren- heit ; or , more strictly defined , it is the amount of heat required to raise one pound of water from 39 ° F. to 40 ° F. The unit of evaporation ...
Σελίδα 55
... amount of heat that was actually used . This can be found as follows : Multiply the total weight of water evaporated under the actual conditions by the total heat of steam under the actual conditions minus heat of feed - water , and ...
... amount of heat that was actually used . This can be found as follows : Multiply the total weight of water evaporated under the actual conditions by the total heat of steam under the actual conditions minus heat of feed - water , and ...
Σελίδα 58
... amount of heat in a pound of coal is meas- ured by a coal calorimeter . Table VII gives the heat- ing value of a number of different grades of coal . The number of heat units absorbed in the water in the boiler for a pound of coal can ...
... amount of heat in a pound of coal is meas- ured by a coal calorimeter . Table VII gives the heat- ing value of a number of different grades of coal . The number of heat units absorbed in the water in the boiler for a pound of coal can ...
Άλλες εκδόσεις - Προβολή όλων
Practical Mathematics for the Engineer and Electrician Joseph Gerald Branch,Elmer Ellsworth Burns Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Practical Mathematics for the Engineer and Electrician (Classic Reprint) Elmer Ellsworth Burns Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Practical Mathematics for the Engineer and Electrician Joseph Gerald Branch,Elmer Ellsworth Burns Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015 |
Συχνά εμφανιζόμενοι όροι και φράσεις
55 watts algebra alternating current amperes angle of lag Answer apparent power brake-horse-power British thermal units calorimeter cent of moisture cents per K. W. circle circular tank coil common fraction cosine cubic feet cubic foot decimal figures decimal places denominator diameter DIFFERENT PRESSURES divided electromotive force equals equation example find the area Find the circumference find the number gallons Gas Engine gives heat units Heating Value horse-power hour K. W. hour kilowatt hours latent heat length lever mean effective pressure minus multiply number of square pipe piston pound of combustible pound of steam pounds of coal pounds of water power factor pressure lines radiation radius rule sine square feet square inches square root steam at 212 stroke subtract TABLE temperature total heat turning force unburned coal water at 212 water evaporated watt hours watts per light weight of coal weight of water whole number zero
Δημοφιλή αποσπάσματα
Σελίδα 12 - Multiplying or dividing both terms of a fraction by the same number does not change the value of the fraction.
Σελίδα 22 - Multiply as in whole numbers, and point off as many decimal places in the product as there are decimal places in the multiplicand and multiplier, supplying the deficiency, if any, by prefixing ciphers.
Σελίδα 122 - 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...
Σελίδα 43 - BTU) is the amount of heat required to raise one pound of water from 59° to 60° Fahrenheit.
Σελίδα 115 - L is the length of the stroke in feet, A is the area of the piston in square inches, and N is the number of power strokes per minute.
Σελίδα 78 - Let W = weight of ball at end of lever; w = weight of lever itself; V = weight of valve and spindle, all in pounds; L = distance between fulcrum and center of ball; I = distance between fulcrum and center of valve; g = distance between fulcrum and center of gravity of lever, all in inches; A =area of valve, in square inches; P = pressure of steam, in pounds per square inch, at which valve will open . Then PAxl = WXL+wXg+VXl; whence P = (WL+wg+Vl)+Al; W = (PAl-wg-Vl)+L; L = (PAl-wg-Vl)-SW.
Σελίδα 22 - CIRCUMFERENCE OF A CIRCLE To find the circumference of a circle multiply the diameter by 3.1416 this latter known as Pi or by the symbol IT thus.
Σελίδα 97 - Subtract its cube from the first period, and to the remainder annex the second period for a dividend. 3. Take three times the square of the root already found ; and, annexing two ciphers, place it on the left as a trial divisor.
Σελίδα 122 - Measures 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...
Σελίδα 118 - ... because the method of measurement is specified. The tangent of the average monthly angle of lag is determined by multiplying by the factor 1,732 the ratio between the sum of and the difference between the readings of two single-phase watt-hour meters installed on the supply circuit. From the tangent of the angle of lag, the cosine of the angle of lag, or power factor, is determined by reference to the standard tables. The "demand...