CHAPTER VII 

 NON-SINUSOIDAL WAVES 



1. The equations for the open-circuit phase voltages of a 

 three-phasej Y-connected ; alternating-current generator are 



ei = 180 sin a^+60 sin 3 cut 



rt O 



e 2 =180 sin (cut g)+60sin3M- p 

 63=180 sin (cot- *) 60 sin 3(cut- '-) 



What is the equation of the line voltage, 612? What would a 

 voltmeter indicate when connected across one phase? When 

 connected across the line terminals? 



2. The equations for the open-circuit phase voltages of a three- 

 phase. Y-connected, alternating-current generator are : 



61 = 5300 sin a^+1200 sin 3 cut 



6 2 = 5300 sin (cut- 3^) + 1200 sin 3(cut- ^) 



63 = 5300 sin (^-^ + 1200 sin 3(cut- *}. 



What is the equation for the line voltage 6 i2 ? What would a 

 voltmeter indicate when connected across one phase? When 

 connected across the line terminals? 



3. The equation for the voltage between line and neutral of 

 a four-phase generator is: 



61 = 1600 sin ^+500 sin 3 wt. 



What is the equation for the voltage between adjacent lino 

 terminals? What would a voltmeter indicate when connected 

 between line and neutral? Between adjacent lines? 



4. The equation for the voltage between line and neutral of a 

 four-phase generator is: 



61 = 1600 sin w+400 sin 5 wt. 



What is the equation for the voltage between adjacent line ter- 



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