Question

11. The arrow-check method of determining connections of pole-phase coil groups assumes that A all currents flow toward the terminals. B. all currents flow toward the star point. C. only one current flows toward the står point. D. only one current flows away from the star point.

Answer 1

3. 4 number of parallels cannot be placed for an 18-pole motors as the 18 cannot be placed in 4 parallel slots in a motor equally in each parallel line..

[by verifying the other options we can solve by logic as 18 can be divisible by 2,3,6 leaving remaider zero which with 4 can't.]