1. ### Lord Dark

121

1. The problem statement, all variables and given/known data
Good evening everyone, I've got the following question :

2. Relevant equations

3. The attempt at a solution
Lets see,, I solved until part (e) and I didn't understand the rest.
My questions are :
(d)
, does it mean P = E(armature)*I(armature) ?? and BTW the word
means output ??
(f) what does
mean ?? what should I do to make the load half ??
(i)
does it equal 0 ?? and if it does why and if not why not ??

these are my questions for now ,, I'll try solving (j) after solving those ,, so I need help

Last edited: Apr 11, 2010
2. ### Lord Dark

121
OK guys ,, I solved all of them except (i) & (j) ,, how can I get the starting current of the armature ?