Question { 4988 }

what is the difference between Earth and neutral? and what
is the difference between ground earthing and neutral
earthing?

Answer

neutral means it is zero potential which provide return path of current.

earthing means the wire is earth in ground.when we experienced
shock the current passes through our body to earthing wire because of loe resistance than ground.

Question { Accenture, 19368 }

if a 3 point starter is not available, how can a dc motor be
started?

Answer

rheostat connected in series field winding perfect rating

Question { ABB, 6829 }

What does substation
operator do in
substation?

Answer

first maintance is required in substation.check the all the reading in control room.A Substation Operator’s is to inspect, operate, and maintain electrical substations, which contain equipment that transforms electricity from one voltage to another so that it can be safely used by customers.

Put another way: An electrical grid is like a relay race. The starting line is the power plant and the finish line is the customer’s home or business. In between, the baton — electricity — is passed between hands several times, which helps it travel farther, faster.

Within an electrical distribution system, the points at which the baton is passed are the electrical substations, while the relay runner who does the passing is the Substation Operator.