Science and Industry, Հատոր 7Colliery Engineer Company, 1902 |
From inside the book
Արդյունքներ 100–ի 1-ից 5-ը:
Էջ 14
... equal to the quantity represented by 1 ampere flowing for 1 second ( i . e . , 1 coulomb ) . A farad would be an ex- ceedingly large capacity , much larger than the capacities met with in practice , so that the practical unit of ...
... equal to the quantity represented by 1 ampere flowing for 1 second ( i . e . , 1 coulomb ) . A farad would be an ex- ceedingly large capacity , much larger than the capacities met with in practice , so that the practical unit of ...
Էջ 15
... equal points in both strokes , one steam valve leaked so badly that the resulting dia- gram from that end was much larger be reliable . If the areas of diagrams rod should SETTING THE CUT - OFF ON AN AUTOMATIC ENGINE 15.
... equal points in both strokes , one steam valve leaked so badly that the resulting dia- gram from that end was much larger be reliable . If the areas of diagrams rod should SETTING THE CUT - OFF ON AN AUTOMATIC ENGINE 15.
Էջ 16
... equal , which produced regular speed of the engine , and made it unnecessary to enlarge the hole in the floor as the ... equal areas . The cut - off of one end was adjusted and Fig . 3 secured in which the areas are equal , and the belt ...
... equal , which produced regular speed of the engine , and made it unnecessary to enlarge the hole in the floor as the ... equal areas . The cut - off of one end was adjusted and Fig . 3 secured in which the areas are equal , and the belt ...
Էջ 18
... equal , it takes into account any leakage that may occur after the cut - off valve closes ; therefore , it is the best plan to adopt when properly executed . Figs . 5 , 6 , and 7 were taken in order to determine the power required for ...
... equal , it takes into account any leakage that may occur after the cut - off valve closes ; therefore , it is the best plan to adopt when properly executed . Figs . 5 , 6 , and 7 were taken in order to determine the power required for ...
Էջ 28
... equal distance in either direction from its FIG . 2 travel , the eccentric must be moved straight across the shaft ... equal distance in tion of mid - travel , as in Fig . 2 , it will be seen that both the valve and eccen- tric must move ...
... equal distance in either direction from its FIG . 2 travel , the eccentric must be moved straight across the shaft ... equal distance in tion of mid - travel , as in Fig . 2 , it will be seen that both the valve and eccen- tric must move ...
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Common terms and phrases
alternating current amount ampere-turns amperes angle armature battery belt binding post boiler brass carbon cent circuit circular mils coal coil condenser connected copper crosshead cut-off cylinder diagram diameter direct current direction distance dynamo efficiency electric electromotive force engine equal feedwater feet field fire flow force formula friction fuel furnace give given grate heater heating surface holes horsepower increase iron joint lamp length load machine machinery magnetic mean effective pressure means mechanical metal method motor necessary number of turns obtained ohms operation pipe piston plant plates pounds practical pressure pulley pump resistance revolutions per minute rheostat SCIENCE AND INDUSTRY Scranton shaft shown in Fig shunt side speed square inch steam steam engine steel stroke superheated switch tank temperature tion tubes turbine valve voltage voltmeter volts weight wheel winding wire
Սիրված հատվածներ
Էջ 632 - AH a unit of resistance, the international ohm, which is based upon the ohm equal to 109 units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
Էջ 455 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it is compelled by force to change that state.
Էջ 512 - Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
Էջ 258 - Bushings must be long enough to bush the entire length of the hole in one continuous piece, or else the hole must first be bushed by a continuous waterproof tube.
Էջ 240 - In the history of mechanical art two modes of progress may be distinguished — the empirical and the scientific. Not the practical and the theoretic, for that distinction is fallacious : all real progress in mechanical art, whether theoretical or not, must be practical. The true distinction is this : that the empirical mode of progress is purely and simply practical ; the scientific mode of progress ia at once practical and theoretic.
Էջ 258 - Must be placed on all service wires, either overhead or underground, as near as possible to the point where they enter the building and inside the walls, and arranged to cut off the entire current from the building.
Էջ 141 - L = length of stroke, in feet; A = area of piston, in square inches; N = number of strokes per minute = number of revolutions x 2. PLAN " " " 33,000 ' The derivation of this formula is explained, as follows: The area of the piston, in square inches, multiplied by the mean effective pressure, in pounds per square inch, gives the total force acting on the piston, in pounds.
Էջ 258 - No. 51.) a. Must be placed on all service wires, either overhead or underground in a readily accessible place, as near as possible to the point where the wires enter the building, and arranged to cut off the entire current.
Էջ 258 - In all wiring special attention must be paid to the mechanical execution of the work. Careful and neat running, connecting, soldering, taping of conductors and securing and attaching of fittings, are specially conducive to security and efficiency, and will be strongly insisted on.