... artist to invoke presence . But another way , cleared for him by Mallarmé , is still open to him : manifest- ing absence , incarnating emptiness . Nature , Abstraction , Time " From the imitation of ALTERNATING CURRENT 27.
... alternating current can be easily measured by a combination of a current transformer and a low range ammeter . The primary of a current transformer ( C.T. ) consists of a few turns of thick cross - section connected in series with the ...
... alternating current over a complete period is called the-roe! mean square. or the ejectl've value _of that alternating current. On this basis, one ampere alternating current will produce the same heating effect in' a given resistance as ...
... alternating - current sup- plies instead of on the normal direct current . This approach was investigated with the alternating- current effects determined for 60 - cycle sinusoidal wave forms . Results indicate that a compromise system ...
... alternating current to direct current . When the loop cuts through the magnetic lines of force moving from 0 ° to 180 ° , the current flows in one direction ( as ... Alternating Current 6 CONVERTING ALTERNATING CURRENT TO DIRECT CURRENT.
... alternating - current power output be- cause the alternating - current component of current is negative at the same time . At low frequency ( fig . 11 ( b ) ) the alternating - current power output ( 47. 4 w ) is larger than at high ...
... alternating current is passed through the armature coils and brings a relative of resistance , known as reactance , into the picture . These two quantities add geometrically to produce an armature - effective resistance that causes the ...
... Alternating - current curves , charac- teristic features of , 703 . Alternating field , resolution of , 647 . Alternations , definition , 7 . Alternator , 7 ; armatures , 10 , 15 , 16 , 25 , 26 , 28 , 31 , 35 , 230 , 231 , 232 , 234 ...
... alternating current is caused in a circuit by a certain E. M. F. , and the phases of this current and E. M. F. are the same , the energy in watts in the circuit is equal to the product of the current in amperes and the E. M. F. in volts ...
... alternating - current ammeters . Campbell , ' Orlich , and Drysdale have each designed resistances for this purpose . A consideration of these lies outside the purpose of this paper . 8 9 Some measurements of the effective inductance of ...