Principles of Electricity and Electromagnetism |
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Page 385
... current of essentially constant magnitude may be produced . Such a machine is known as a direct- current generator . Both alternating and direct currents are widely used for the trans- mission of power . Each system has its advantages ...
... current of essentially constant magnitude may be produced . Such a machine is known as a direct- current generator . Both alternating and direct currents are widely used for the trans- mission of power . Each system has its advantages ...
Page 400
... current is drawn from the armature , there is of course an armature reaction as in the case of the direct - current machine , though its effects can be minimized by proper design . For a further discussion of alternator design reference ...
... current is drawn from the armature , there is of course an armature reaction as in the case of the direct - current machine , though its effects can be minimized by proper design . For a further discussion of alternator design reference ...
Page 493
... direct - current power from a battery or generator into alternating - current power throughout the entire frequency range from 0 to about 1010 cycles per second as in amplifiers and oscillators . The basic phenomena associated with non ...
... direct - current power from a battery or generator into alternating - current power throughout the entire frequency range from 0 to about 1010 cycles per second as in amplifiers and oscillators . The basic phenomena associated with non ...
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angle antenna applied approximately assumed atom axis becomes calculated capacity carrying cell characteristic charge circuit closed coil component condition conducting conductor connected considered constant curve density depends determined dielectric difference direction discharge discussion distance effective electric electrons element energy equal equation evident expression factor field flow flux force frequency function galvanometer given grid hence impedance important increases indicated induction integral ions known length limited linear load losses magnetic magnetic field magnitude maximum means measured mechanical metal meter method negative normal obtained oscillations parallel path period phase placed plate positive potential present produced proportional quantities radius ratio reduced region relation represents resistance result rotation seen separation Show shown simple solution space surface temperature terminals transformer tube unit vector volts volume wave wire written zero