Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 278
p off more than 10 per cent in speed from no loadto full load. Figure 167 shows the connections for testing dyna-mos and motors without the expenditure of much en-ergy. The motor M drives the generator G and the 272 Operating a)id Testing current from it is pumped back into the line. Theactual… … Figure 167 ously described. The power consumed by the two isfound by multiplying the volts and amperes used bythe motor. The power delivered back to the line is equal to theproduct of the volts and amperes in the generator cir- Testing 273 cuit. Roughly the efficiency of the two is the load onthe…
Electrical engineering · Electric testing
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