Problems

Author: E.E. Kimberly

	Problem	Answer
1	A cumulative compound interpole motor connected for operation in a clockwise direction is to be driven as a cumulative compound generator in a counter-clockwise direction with reversed polarity. Give instructions for making necessary changes without reversing the remanent magnetism.
2	A cumulative Compound interpole, self-excited generator is to be used as a cumulative compound motor in the same direction of rotation. Give instructions for making necessary changes in connections.
3	Two compound generators in parallel are used to energize a factory power line. The driving engine of one generator is stopped before the generator is disconnected from the line. Analyze the probable results.