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DIRECTCURRENT GENERATORS AND MOTORS
Standard DirectCurrent Generators 724
DirectCurrent Motors 2547
15 other sections not shown
alinement arma armature terminal block bottom leg brush face burned cambric cause commutator bars commutator segments commutator surface compound motor conductors connected contactor copper core current ﬂowing deﬂection direct current direct-current direction of rotation electromotive force end in bar end play external circuit faults ﬁber ﬁeld circuit ﬁeld coils ﬁeld current ﬁeld rheostat ﬁeld winding ﬁle ﬁnd ﬁne ﬁrst ﬁsh paper ﬁt ﬂux frame friction tape growler hammer indicated insulation keyway knife lathe lathe centers leads leg in slot lifted line switch load machine magnetic ﬁeld method mica V ring mutator number of turns ooil open circuit pitch placed polarity pole piece position pressure produced removed repair replaced reversed sandpaper series ﬁeld series motor series-ﬁeld shaft shellac short circuits shown in Fig shunt ﬁeld side solder south pole sparking speed starting resistance strip sufﬁcient tape top leg varnish voltage voltmeter wire wound