what do old john and his friends say
Answers
Answer:
tell me the name of this chapter
Explanation:
The relays used in power system protection are of different types. Among them differential relay is very commonly used relay for protecting transformers and generators from localised faults.
Differential relays are very sensitive to the faults occurred within the zone of protection but they are least sensitive to the faults that occur outside the protected zone. Most of the relays operate when any quantity exceeds beyond a predetermined value for example over current relay operates when current through it exceeds predetermined value. But the principle of differential relay is somewhat different. It operates depending upon the difference between two or more similar electrical quantities.
Answer:' such such were the joys when we were all girls and boys in our youth time were seen on the echoing green .
Explanation the old folks were recalling their childhood