Answer Posted / k.prakashchandra

Differential relay compares the correspondig currents of
the same phase on both sides,where REFR compares the
unbalanced current of the phases with the current in the
neutral

Why the cores of large transformers build up of circular cross section?

1731

---

how to prepare the technical test

1602

---

Why power factor should not be in leading (capacitive) mode of any load.

5828

---

What is mason's gain formula?

764

---

how rectifier transformer work in electroststic precipetatore(esp?

2084

---

---

What are the criteria shall be considers for sizing Fuse and MCB? If the rated current is 10Amps what should be the fuse size / MCB Size?

1008

---

what is the difference between ups & inverter

5466

---

i am venkat i got gre 930(verbal 270 quanta 660) and my toefl score 105..here question is why u got less score in gre ? what i supposed to tell...any chance of rejection is there...my accadamics record is very good

1715

---

How to calculate fault level of 11 KV system

1501

---

which motor have relatively high power factor and what is reason for have high pf? 1.capacitor run motor 2.shaded pole motor 3.capacitor start motor 4.split phase motor

1461

---

What is the difference between isolators and electrical circuit breakers? What is bus-bar?

665

---

Is there any Institution for giving M-tech in Electrical engineering for those who r in service? Give the details please.

1556

---

iam working in power plant. In hot places tube lights are glowing at the end portion only. what is the reason for that?

1442

---

what is the use of the puls transformer in UPS & how it works???????????

1653

---

i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value

1405

---