Arithmetic, Mensuration and Use of Letters in Formulas, Principles of Mechanics, Machine Elements, Mechanics of Fluids, Strength of Materials, Elements of Electricity and Magnetism, Heat and Steam |
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Page 9
... per day . The engineer made certain alterations which resulted in a saving of 250 pounds per day . What was the per cent . of coal saved ? Ans . 7 % , nearly . 2. If the speed of an engine running at 126 revolutions per minute should be ...
... per day . The engineer made certain alterations which resulted in a saving of 250 pounds per day . What was the per cent . of coal saved ? Ans . 7 % , nearly . 2. If the speed of an engine running at 126 revolutions per minute should be ...
Page 65
... per min . can fill a tank in 20 hr . , how long will it take a pump discharging 12 gal . per min . to fill it ? Ans ... revolutions ; how many revolutions would it make in going the same distance if the wheels were 22 ft . in circum ...
... per min . can fill a tank in 20 hr . , how long will it take a pump discharging 12 gal . per min . to fill it ? Ans ... revolutions ; how many revolutions would it make in going the same distance if the wheels were 22 ft . in circum ...
Page 6
... revolutions per minute , the velocity of any point is uniform . A railway train having a constant speed of 40 miles per hour moves 40 miles every hour , or mile every minute , and since equal spaces are 48 passed over in equal times ...
... revolutions per minute , the velocity of any point is uniform . A railway train having a constant speed of 40 miles per hour moves 40 miles every hour , or mile every minute , and since equal spaces are 48 passed over in equal times ...
Page 9
... by the velocity . Or , d t = v - EXAMPLE 1. Suppose that the radius of the crank of a steam engine is 15 inches and that the shaft makes 120 revolutions per minute ; how long will it take the crankpin to travel 18,849.6 feet ? SOLUTION ...
... by the velocity . Or , d t = v - EXAMPLE 1. Suppose that the radius of the crank of a steam engine is 15 inches and that the shaft makes 120 revolutions per minute ; how long will it take the crankpin to travel 18,849.6 feet ? SOLUTION ...
Page 18
... by the following rule , where f force in pounds ; = a = acceleration or retardation in feet per second . Rule 5 ... revolutions per minute ? This question , or similar questions 18 $ 4 PRINCIPLES OF MECHANICS .
... by the following rule , where f force in pounds ; = a = acceleration or retardation in feet per second . Rule 5 ... revolutions per minute ? This question , or similar questions 18 $ 4 PRINCIPLES OF MECHANICS .
Common terms and phrases
12 inches altered number amperes Applying rule base belt block and tackle body boiler called center of gravity cipher circle circuit circumference conductor cube root cubic foot cubic inches cylinder decimal places decimal point denominator diametral pitch distance divided dividend divisor driven pulley driven wheel electricity electromotive force equal EXAMPLE.-What EXAMPLES FOR PRACTICE feet per minute foot foot-pounds formula fraction frustum gallons gear gear-wheel given number heat Hence horsepower inches in diameter iron kinetic energy length lever magnetic minuend motion multiplied number of revolutions number of teeth obtained ohms pipe piston pounds of water pounds per square pressure pulley pump quantity quotient ratio remainder resistance revolutions per minute rope screw shaft shown in Fig side SOLUTION square inch square root steam subtract surface temperature trial divisor triangle tube unit velocity volts volume weight whole numbers
Popular passages
Page 39 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
Page 21 - A fraction is one or more of the equal parts of a unit...
Page 10 - Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq.
Page 19 - Rule.— I. Write the divisor at the left of the dividend, with a line between them.
Page 11 - Cubic Measure 1728 cubic inches (cu. in.) =1 cubic foot (cu. ft.) 27 cubic feet = 1 cubic yard (cu. yd.) 128 cubic feet = 1 cord (cd...
Page 4 - Divide the continued product of the mean effective pressure in pounds per square inch, the length of the stroke in feet, the area of the piston in square inches, and the number of strokes per minute, by 33,000 ; the result will be the horsepower.
Page 59 - The terms of a ratio are the two numbers to be compared ; thus, in the above ratio, 20 and 4 are the terms. When both terms are considered together, they are called a couplet ; when considered separately, the first term is called the antecedent, and the second term the consequent. Thus, in the ratio 20 : 4, 20 and 4 form a couplet, and 20 is the antecedent, and 4 the consequent.
Page 3 - The pressure per unit of area exerted anywhere upon a mass of liquid is transmitted undiminished in all directions, and acts with the same force upon all surfaces, in a direction at right angles to those surfaces.
Page 62 - The first and fourth terms of a proportion are called the extremes, and the second and third terms, the means. Thus, in the foregoing proportion, 8 and 3 are the extremes and 4 and 6 are the means.
Page 11 - Every body continues in a state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by a force impressed upon it.