Practical Operation of Arc LampsNational carbon Company, 1911 - 75 σελίδες |
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Αποτελέσματα 1 - 5 από τα 10.
Σελίδα 14
... temperature change . On the other hand , if the lower carbon is too short , it will burn down into the carbon holder . In cutting the old upper carbon for the lower of the next trim , the end which has been in the upper holder should be ...
... temperature change . On the other hand , if the lower carbon is too short , it will burn down into the carbon holder . In cutting the old upper carbon for the lower of the next trim , the end which has been in the upper holder should be ...
Σελίδα 46
... temperatures . Both of these cause errors in the reading . In the permanent magnet type of direct current instru- ments if the temperature is increased the strength of the magnets will be decreased which tends to decrease the reading of ...
... temperatures . Both of these cause errors in the reading . In the permanent magnet type of direct current instru- ments if the temperature is increased the strength of the magnets will be decreased which tends to decrease the reading of ...
Σελίδα 52
... temperature rises . The resistance of one foot of copper wire with a cross section area of one circular mil has been found to be 10.8 ohms at 75 ° F. For wiring calculations this is commonly taken as 11. ohms . The resistance of any ...
... temperature rises . The resistance of one foot of copper wire with a cross section area of one circular mil has been found to be 10.8 ohms at 75 ° F. For wiring calculations this is commonly taken as 11. ohms . The resistance of any ...
Σελίδα 60
... between this amount and that required to raise an equal weight of water at its maximum density one degree is the Specific Heat of the substance . Calculation of Temperature by the Rise in Resistance The resistance 60 60.
... between this amount and that required to raise an equal weight of water at its maximum density one degree is the Specific Heat of the substance . Calculation of Temperature by the Rise in Resistance The resistance 60 60.
Σελίδα 61
... temperature rises . The change in resistance per ohm per degree rise in temperature is called the temperature co - efficient . If R。 is the resistance of a conductor at 0 ° C and a , the temperature co - efficient for that conductor ...
... temperature rises . The change in resistance per ohm per degree rise in temperature is called the temperature co - efficient . If R。 is the resistance of a conductor at 0 ° C and a , the temperature co - efficient for that conductor ...
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.