Practical Operation of Arc LampsNational carbon Company, 1911 - 75 σελίδες |
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Σελίδα 44
... measure the resistance between the terminal A of the line and the ground ; call it Ra . ground , calling it Rb . A B Suppose the Fig.23 . OC Also measure between B and the Then the distances from the sta- tion to the point G along the ...
... measure the resistance between the terminal A of the line and the ground ; call it Ra . ground , calling it Rb . A B Suppose the Fig.23 . OC Also measure between B and the Then the distances from the sta- tion to the point G along the ...
Σελίδα 60
... measurements . It is that quantity of heat required to raise one pound of pure water 1 ° F. at or near 39.1 ° F. This unit varies slightly as the density of the water changes , but for ordinary calculations it is assumed to be constant ...
... measurements . It is that quantity of heat required to raise one pound of pure water 1 ° F. at or near 39.1 ° F. This unit varies slightly as the density of the water changes , but for ordinary calculations it is assumed to be constant ...
Σελίδα 61
... a = 0.0042 R2 t2 2 ( 238 + t1 ) -238 R1 The temperature co - efficient for aluminum is 0.0039 for 1 ° C. For steel it is 0.005 and brass 0.0038 . Horse Power Calculations To measure the available horse power supplied 61.
... a = 0.0042 R2 t2 2 ( 238 + t1 ) -238 R1 The temperature co - efficient for aluminum is 0.0039 for 1 ° C. For steel it is 0.005 and brass 0.0038 . Horse Power Calculations To measure the available horse power supplied 61.
Σελίδα 62
National Carbon Company, Inc. Horse Power Calculations To measure the available horse power supplied to an engine , it is necessary to know the steam pressure on the face of the piston at all times during the forward stroke . Also the ...
National Carbon Company, Inc. Horse Power Calculations To measure the available horse power supplied to an engine , it is necessary to know the steam pressure on the face of the piston at all times during the forward stroke . Also the ...
Σελίδα 66
... . 90 to 100 Pitch . 72 1.44 to 1.6 1.15 Sand . 90 to 110 1.44 to 1.76 Sandstone . 140 to 150 2.24 to 2.4 Slate . 170 to 180 2.72 to 2.88 Tile ... 110 to 120 1.76 to 1.92 TABLE 8 Metric System Measures of Length 10 millimeters ( 66 99.
... . 90 to 100 Pitch . 72 1.44 to 1.6 1.15 Sand . 90 to 110 1.44 to 1.76 Sandstone . 140 to 150 2.24 to 2.4 Slate . 170 to 180 2.72 to 2.88 Tile ... 110 to 120 1.76 to 1.92 TABLE 8 Metric System Measures of Length 10 millimeters ( 66 99.
Άλλες εκδόσεις - Προβολή όλων
Practical Operation of Arc Lamps Inc National Carbon Company Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2023 |
The Practical Operation of ARC Lamps (Classic Reprint) National Carbon Company Inc Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Συχνά εμφανιζόμενοι όροι και φράσεις
A. C. lamps adjustment allow alternating current aluminum disc Ammeter amperes arc lamp circuits armature bons carbon holder carrying capacity cause the lamp choke coil circular mils clean clock feed lamp clutch conductor connected in series copper wire cored carbons cubic cuits Current Transformer cut-out D. C. circuits dash pot decagram decimeter diameter direct current Electrical enclosed arc lamps fed downward feet Flame Arc Lamps gas cap graphite ground heat high arc voltage horse power inch inclined carbon lamps inner globe insulation jump badly light Lightning Arresters line voltage lower carbon mean effective pressure mercury arc rectifier meters motor feed multiple lamp obtained operate Plug Switches position regulating mechanism regulating resistance series arc lamp series coil series lamps series magnet series multiple shown in Fig shunt coil side Specific Gravity square TABLE trimmer trimming tubes upper carbon usually vertical carbon lamp wattmeter weight
Δημοφιλή αποσπάσματα
Σελίδα 67 - Measures of Weight 10 milligrams (mg) =1 centigram eg 10 centigrams =1 decigram dg 10 decigrams =1 gram g 10 grams =1 dekagram Dg...
Σελίδα 49 - ... b. Must be placed at every point where a change is made in the size of wire [unless the cut-out in the larger wire will protect the smaller.
Σελίδα 67 - OF CAPACITY 10 milliliters (ml.) = 1 centiliter (cl.) 10 centiliters = 1 deciliter (dl.) 10 deciliters = 1 liter (1.) 10 liters = 1 dekaliter (Dl.) 10 dekaliters = 1 hektoliter (hi.) 10 hektoliters = 1 kiloliter (kl.) MEASURES OF WEIGHT 10 milligrams (mg.) = 1 centigram (eg.) 10 centigrams = 1 decigram (dg.) 10 decigrams = 1 gram (g.) 10 grams...
Σελίδα 48 - Wires must be so spliced or joined as to be both mechanically and electrically secure without solder. The joints must then be soldered unless made with some form of approved splicing device, and covered with an insulation equal to that on the conductors.
Σελίδα 67 - Measures of Length 10 millimeters (mm) =1 centimeter cm 10 centimeters =1 decimeter dm 10 decimeters =1 meter m 10 meters =1 dekameter Dm 10 dekameters =1 hektometer Hm 10 hektometers =1 kilometer Km...
Σελίδα 55 - The lower limit is specified for rubber-covered wires to prevent gradual deterioration of the high insulation* by the heat of the wires, but not from fear of igniting the insulation. The question of drop is not taken into consideration in the above tablea.
Σελίδα 64 - The Specific Gravity of a substance is the ratio of its weight to that of an equal volume of water.
Σελίδα 58 - The work done by a force acting obliquely on a moving body is measured by the product of the force and the distance through ivhich the body moves in the direction of the force.
Σελίδα 50 - ... systems must not at Central Stations be smaller than the neutral wire and not smaller than No. 6 B. & S.
Σελίδα 69 - Fahrenheit multiply by 1.8 and add 32. To convert degrees Fahrenheit to Centigrade, subtract 32 and divide the result by 1.8.