निम्नलिखित में से कौन सा विकल्प एक पृथक रूप से उत्तेजित (separately excited) DC मशीन का वर्णन करता है?

In a three-phase alternator, the factor that accounts for the reduction in induced EMF because the coils within a phase group are spread across several slots per pole is known as the ________.

Which factor is least significant in determining the rating of a distribution transformer?