Shop Mathematics ...: Shop arithmeticMcGraw-Hill book Company, 1912 |
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Αποτελέσματα 1 - 5 από τα 13.
Σελίδα xi
... HEAT 122. Nature of heat 123. Temperatures 124. Expansion and contraction . 125. Allowances for shrink fits 126. Stresses 127. Ultimate stresses 163 164 168 . 171 HAPTER XX STRENGTH OF MATERIALS 128. Safe working stresses 129. Strengths ...
... HEAT 122. Nature of heat 123. Temperatures 124. Expansion and contraction . 125. Allowances for shrink fits 126. Stresses 127. Ultimate stresses 163 164 168 . 171 HAPTER XX STRENGTH OF MATERIALS 128. Safe working stresses 129. Strengths ...
Σελίδα 55
... heating the fine edges of the tools . The following surface speeds may be taken as representing good practice : Grindstones : For machinists ' tools , 800 to 1000 ft . per minute . For carpenters ' tools , 550 to 600 ft . per minute ...
... heating the fine edges of the tools . The following surface speeds may be taken as representing good practice : Grindstones : For machinists ' tools , 800 to 1000 ft . per minute . For carpenters ' tools , 550 to 600 ft . per minute ...
Σελίδα 150
... heat at the rubbing surfaces of the pulley rim and the brake . It is necessary to keep a stream of water playing on the rim to remove this heat and it is best to have special brake wheels for testing . These have thin rims and inwardly ...
... heat at the rubbing surfaces of the pulley rim and the brake . It is necessary to keep a stream of water playing on the rim to remove this heat and it is best to have special brake wheels for testing . These have thin rims and inwardly ...
Σελίδα 162
... size must the ram be that a load of 10,000 lb. can be lifted with a water pressure of 72 lb. per square inch , the efficiency of the whole apparatus being 70 % ? CHAPTER XIX HEAT 122. Nature of Heat . - Some 162 SHOP ARITHMETIC.
... size must the ram be that a load of 10,000 lb. can be lifted with a water pressure of 72 lb. per square inch , the efficiency of the whole apparatus being 70 % ? CHAPTER XIX HEAT 122. Nature of Heat . - Some 162 SHOP ARITHMETIC.
Σελίδα 163
... Heat . - Some of the effects of heat are very useful in shop work and every mechanic should know something of the nature of heat and of the laws which govern its applica tions to shop work . Heat is a form of energy ; that is , it is ...
... Heat . - Some of the effects of heat are very useful in shop work and every mechanic should know something of the nature of heat and of the laws which govern its applica tions to shop work . Heat is a form of energy ; that is , it is ...
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
Answer bolt brake calculate cast iron Centigrade cents CHAPTER cipher circle circumference column compression countershaft crank Cube root root Cube Square Cube cylinder decimal places decimal point denominator diameter difference distance divided dividend divisor dollar driven gear efficiency equal Example exerted Explanation Fahrenheit figure foot-pounds force arm formula fulcrum given number gives heat Hence hoist horse-power improper fraction inclined plane lathe lead screw length lever lift lineshaft load machine mean effective pressure mechanical advantage mechanical efficiency mixed number movable block move the decimal multiply necessary numbers of teeth piece pounds PROBLEMS pulley pump pyrometer quotient radius raised reduced revolutions per minute ROOTS OF NUMBERS.-Continued rope shaft sheave shown in Fig specific gravity speed ratio Square Cube root Square Cube Square square inch square root steam engine steel stress stroke subtract temperature threads per inch trial divisor weight arm wheel whole number
Δημοφιλή αποσπάσματα
Σελίδα 7 - TIME 60 seconds (sec.) = 1 minute (min.) 60 minutes = 1 hour (hr.) 24 hours = 1 day (da.) 7 days = 1 week (wk.) 365 days = 1 common year...
Σελίδα 89 - Written as a formula this would read This can be illustrated by drawing squares on each side, as in Fig. 29, and noting that the area of the square on the hypotenuse is equal to the sum of the areas of the other two.
Σελίδα 38 - Subtract the number of decimal places in the divisor from the number of decimal places in the dividend, and point off as many decimal places in the quotient as there are units in the remainder thus found.
Σελίδα 146 - MEP in pounds per square inch; A = area of piston in square inches; L = length of stroke in feet ; N= number of working strokes per minute.
Σελίδα 37 - To divide by 10, move the decimal point one place to the left. To divide by 100, move the decimal. point two places to the left, and so on for other powers of 10.
Σελίδα 3 - An Improper Fraction is one whose numerator is equal to, or greater than, the denominator; as, f, f.
Σελίδα 133 - Fig. 49. We will solve this problem partly graphically and partly by calculation. The first step is to find how fast the crank pin D is moving. For one turn of the crank, D travels through a distance equal to the circumference of a circle whose radius is R, that is, a distance of 2'ffTi.
Σελίδα 38 - EULE.—Divide as in whole numbers, and point off as many decimal places in the quotient as the number of decimal places in the dividend exceeds the number in the divisor.
Σελίδα 5 - When the numerator is less than the denominator, the value of the fraction is less than 1. 5th. When the numerator is equal to the denominator, the value of the fraction is equal to 1. 6th. When the numerator is greater than the denominator, the value of the fraction is greater than 1.
Σελίδα 61 - In any proportion, the product of the means is equal to the product of the extremes.