Shop Mathematics ...: Shop arithmeticMcGraw-Hill book Company, 1912 |
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Σελίδα 47
... shaft in its bearings and in the slipping of the belts . The efficiencies of all machinery should be kept as high as possible because the difference between 100 % and the effi- ciency means money lost . The large amount of power that ...
... shaft in its bearings and in the slipping of the belts . The efficiencies of all machinery should be kept as high as possible because the difference between 100 % and the effi- ciency means money lost . The large amount of power that ...
Σελίδα 49
... shaft and belting , what size motor must we install ? 100 % -20 % -80 % 80 % .80 , or .8 12.8 = 15 , Answer . Example of Case 3 : Explanation : Here the per cent given ( 20 % ) is based on the horse - power of the motor , which is , as ...
... shaft and belting , what size motor must we install ? 100 % -20 % -80 % 80 % .80 , or .8 12.8 = 15 , Answer . Example of Case 3 : Explanation : Here the per cent given ( 20 % ) is based on the horse - power of the motor , which is , as ...
Σελίδα 59
... shaft be driven in a lathe to give a cutting speed of 60 ft . per minute ? 110. At what R. P. M. should a 1 in . high speed drill be run to give a cutting speed of 80 ft . per minute ? If the drill is fed .01 in . per revolution , how ...
... shaft be driven in a lathe to give a cutting speed of 60 ft . per minute ? 110. At what R. P. M. should a 1 in . high speed drill be run to give a cutting speed of 80 ft . per minute ? If the drill is fed .01 in . per revolution , how ...
Σελίδα 73
Earle Bertram Norris, Kenneth Gardner Smith, Ralph Thurman Craigo. B 127. It has been decided to equip the punch in. COUNTERSHAFT GRINDER- FIG . 15 . A FIG . 16 . LINE SHAFT PULLEY AND GEAR TRAINS 73.
Earle Bertram Norris, Kenneth Gardner Smith, Ralph Thurman Craigo. B 127. It has been decided to equip the punch in. COUNTERSHAFT GRINDER- FIG . 15 . A FIG . 16 . LINE SHAFT PULLEY AND GEAR TRAINS 73.
Σελίδα 74
... shaft . If a car has 33 - in . wheels and a gear ratio of 1 : 4 , how fast would the car go when the motor is running 1200 R. P. M. ? 129. Fig . 16 shows the head stock for a lathe . The cone pulley carries with it the cone pinion A ...
... shaft . If a car has 33 - in . wheels and a gear ratio of 1 : 4 , how fast would the car go when the motor is running 1200 R. P. M. ? 129. Fig . 16 shows the head stock for a lathe . The cone pulley carries with it the cone pinion A ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
allowable Answer belt bolt calculate cast iron Centigrade cents cipher circle circumference common denominator common fraction compression countershaft Cube root root Cube Square Cube cubic cutting speed cylinder decimal places decimal point diameter dimes distance divide dividend division divisor dollar driven efficiency emery wheel equal Example exerted expansion Explanation Fahrenheit feet figure foot-pounds formula gear given gives heat Hence hoist horse-power hydraulic improper fraction inclined plane large piston lathe lead screw length lever lifted lineshaft machine mean effective pressure mechanical advantage mixed number move the decimal multiply necessary numbers of teeth piece pipe PROBLEMS pull pulley pump pyrometer quotient raised ratio reduced revolutions per minute rope shaft sheave shown in Fig specific gravity Square Cube root Square Cube Square square inch square root steam engine steel stress stroke subtract tank temperature thermometer threads water pressure whole number
Δημοφιλή αποσπάσματα
Σελίδα 59 - In any proportion, the product of the means is equal to the product of the extremes.
Σελίδα 87 - Put another way, if you construct squares on the edges of a right-angled triangle, the area of the square on the hypotenuse is equal to the sum of the areas of the squares on the other two sides.
Σελίδα 60 - Solve by knowing that the product of the means equals the product of the extremes...
Σελίδα 7 - TIME 60 seconds (sec.) = 1 minute (min.) 60 minutes =1 hour (hr.) 24...
Σελίδα 37 - If there are more decimal places in the divisor than in the dividend, what do you do ? What will the figures of the quotient then be ? § 132.
Σελίδα 36 - 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 144 - 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 35 - 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 100 - No. Square Cube Square root Cube root No. Square Cube Square root Cube root 1 1 1 1.