STANDARDIIA1U>\ *!/>:.% "A / //> I / 7UL 



11 - tipplie* both direct and alternating 

 c same armature -winding . 



1U As i ..; alternator in which both itld and 



armature winding* am station .> 



lib aathinc structurally identical with an 



.iction motor, but .\c synchronous speed a* an alternating- 



nt gcnci 



12 A MOTOR transforms electrical power into r*tffltftknt power. 



lia A DIRECI i MOTOR transforms d ;ower into me- 



12b >ntforms alternating -current 



lie A mach urally (dent* 



synchronous alternator, but operated a* a motor. 



lid A * s. HRONOUS- PHASE MooiMEE. omeiimt called a SyocfefOflmft Con- 

 rooous motor, running cither idle or underload. wbotefteJd 



>cd to a . the power-factor of t i 



or ihroufh - influence the voltage of the or 



He rent motor, either i 



polrphaae, independent orimary and jtcondiry 



one of which, usually the r The 



secondary winding has n<> .-.!::. . .,nn.-, non with the np|> 

 Iff A Ki \IOTOI is an induct . 11 y wnfle phaae. in which 



axis of the secondary, (a doted coil winding mounted on the 

 r). is maintained at a > ! angle with respect to the sUtiooary 



primary coil by mean* of a multirgmcntal commutator aad ih< 

 ing brushes. 

 12g 



to a series direct-current t: iually |>r n ad- 



i series compensating * -ed around the out- 



t! in slots in the pole face*, for the poipos* of 

 leakage react a: 



13 A BoosTKE is a mat him- m>erted in MTK-N :n a .: .11*. to change it* 



'.IKC. It mav !.< <lnvm ':-. .. . which cate it is termed 



a motor-booster) or otherwise. 



14 A MOIOK < .> M w M. K is a transforming device consisting of a motor 



'cted to one or more generators. 



16 A I 1 msforming d< innmg both motor and 



general* magnet -her with two armatures, or with 



one armature having two separate winding- and independent commutator*. 



16 ng mechanical rotation in 

 elr i into another. A converter may 

 to either of several types, as follows: 



17 a. A DiKKt i ('t MKBST CONVERTER converts from a direct current to 

 a direct current. . 'age. 



18 s VERIER (commonly called a rotary converter* 

 converts from an alternating to a <! or m* rrrju. 



19 i. A MOTOR- rnsxkit IKK a combination of an induction motor with 



a synchronous converter, the secondary of the former leeoing UM arma- 



iuem > other than the impressed 



turc of th nt at 



frc' t is a synchronous converter concatenated with an in- 



SO **. A FIBQVEM t t'utM.i * rts the power of an alternating-current 

 system from one frequency to another, with or without a change in the 

 number of phases or in the voltage. 



21 t. A ROTARY PHASE CONVERTER cor MI an alternating-current 



system of one or more phases to an alternating-current system of a dif- 

 ferent number of phases, but of the tame frequency. 



aia KOI U.I/IM. CONN*:* u. -sx are low resistance connections between 

 equipotential points of multiple-wound closed-coil armatures to equalise 

 the induced voltage between brushes. 



