for stepdown distribution transformers the secondery side ie
lt side y-with nutrel earhto be connected because of load
side the current is not zero ie varying.hence we r connected
y-with nutrel earh......... finally this because of stand by
earth fault in load sideie secondery side..
In a synchronous motor armature current flows due to
revolving flux which in turn rotates the load,but in no
load condition armature current is zero hence thr is no
revolving flux then how motor rotates?
i work as a technician at a private company.. i used to take
amp reading for certain appliances such as air con.. the
problem is when i clamp the neutral, wire there is a current
reading.. from my understanding for single phase system
neutral should not have current unless if the circuit is not
complete.. yet the air con still work