Shop Mathematics ...: Prepared in the Extension Division of the University of Wisconsin, Τόμος 1McGraw-Hill book Company, Incorporated, 1924 |
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Σελίδα 26
... loads of excavated earth per hour , each load containing about 24 cu . yd . If the crew works 93 hr . daily , how many days will it take to remove an excavation of about 12,000 cu . yd . 60. I want to cut 300 pieces of steel each 112 in ...
... loads of excavated earth per hour , each load containing about 24 cu . yd . If the crew works 93 hr . daily , how many days will it take to remove an excavation of about 12,000 cu . yd . 60. I want to cut 300 pieces of steel each 112 in ...
Σελίδα 59
... load , what per cent of the total rated capacity of the plant is in operation ? 96. A railroad shop employing 500 men receives instructions to reduce its working force 30 % . How many men must be laid off to comply with this order ? 97 ...
... load , what per cent of the total rated capacity of the plant is in operation ? 96. A railroad shop employing 500 men receives instructions to reduce its working force 30 % . How many men must be laid off to comply with this order ? 97 ...
Σελίδα 100
... loads for bolts , beams , etc. , tables of proportions of standard machine parts of different sizes , etc. The engineer uses tables of the properties of steam , and of the horsepower of engines , boilers , etc. There are certain ...
... loads for bolts , beams , etc. , tables of proportions of standard machine parts of different sizes , etc. The engineer uses tables of the properties of steam , and of the horsepower of engines , boilers , etc. There are certain ...
Σελίδα 141
... load or weight W tending to descend ; and second , that of the force P tending to raise W. The ability of W to descend or to resist being lifted depends upon two things - its weight and its distance from the fulcrum F. The product of ...
... load or weight W tending to descend ; and second , that of the force P tending to raise W. The ability of W to descend or to resist being lifted depends upon two things - its weight and its distance from the fulcrum F. The product of ...
Σελίδα 142
... the weight arm b is 2 ft . What force at P will lift a load W of 1800 lb. ? Force Force arm = Weight Weight arm or PX a = W × b Therefore , P X 12 1800 X 2 = PX 12 3600 = Then if P times 12 is 3600 , P will 142 SHOP ARITHMETIC.
... the weight arm b is 2 ft . What force at P will lift a load W of 1800 lb. ? Force Force arm = Weight Weight arm or PX a = W × b Therefore , P X 12 1800 X 2 = PX 12 3600 = Then if P times 12 is 3600 , P will 142 SHOP ARITHMETIC.
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
amount Answer Antilog belt block boiler bolt brake horsepower calculated castings Centigrade cents ciphers circle circumference common denominator common fraction cube root cubic cutting speed cylinder decimal places decimal point diameter dimensions dimes distance divide dividend division dollar efficiency emery wheel equal Example Explanation Fahrenheit feet final divisor foot-pounds force arm formula given gives heat hoist horsepower improper fraction inclined plane indicated jackscrew lathe lead screw length lever lifted line shaft load logarithmic scale machine mantissa measure mechanical advantage minute mixed numbers multiply number of teeth operation piece piston pound pressure PROBLEMS pulley pump quotient raised reduced revolutions per minute rope shaft shown in Fig slide rule square inch square root steam engine steel stress stroke subtract surface speed temperature threads per inch trial divisor unit volume weight arm whole number width
Δημοφιλή αποσπάσματα
Σελίδα 129 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30j square yards = 1 square rod (sq.
Σελίδα 8 - TIME 60 seconds (sec.) = 1 minute (min.) 60 minutes =1 hour (hr.) 24...
Σελίδα 163 - 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 3 - An Improper Fraction is one whose numerator is equal to, or greater than, the denominator; as, f, f.
Σελίδα 41 - 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 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 76 - In any proportion, the product of the means is equal to the product of the extremes.
Σελίδα 41 - To multiply by 10, move the decimal point one place to the right, annexing a zero if necessary.
Σελίδα 2 - Definition of a Fraction. — A Fraction is one or more of the equal parts into which anything may be divided.