The difference between the split ring commutator in a DC motor and the slips rings in an AC generator can be tricky. The split ring makes changes in the rotation every so often. A slip ring just stays in place and is only used as a connector. So a slip ring is for DC, whereas the split ring is used for AC.
It seems like the author is using kenning, because instead of saying "teacher", they're using "grade-giver".
so the poetic devise is kenning
hope this helps :)
Answer:
Dont
Explanation:
it is the only verb in the sentence it also tells the rough time frame of the statement
