THE INDUCTION MOTOR. 



it 



duced in it is equal 10-7= ~ z * icr 8 multiplied by A G-^ABCDG, 



V 2 



that is to say, equal to 



z * IO" 8 = 1.836 ~ z 



volts. 



For a coil extending over an angle of go degs. (Fig. 54), we find 



FIG. 54. 



at once the co-efficient entering into the general equation for the 

 e. m. f. to be 



1/2 2 



Let the coil cover an angle of 30 degs. (Fig. 55), and we have at 

 once for the co-efficient 



7T 2 7T 



V/2 6 1/2 



as found in Section 20. 



98 



