Electrical Machines
If the handle of a three point starter goes to back to OFF position, it may be due to

 all of these.
 high filed circuit resistance.
 over load.
 zero or very low voltage supply.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Two dc machines A and B, using the same conductor material, have armature circuit resistances of 0.4 Ω and 1.2 Ω respectively. Of the two machines,

 A is bigger than B for the same current rating
 both are of the same size for the same current rating
 A is bigger than B for the same voltage rating
 B is bigger than A for the same current rating

ANSWER DOWNLOAD EXAMIANS APP