what is diffential relay? testing proceure?and transformer reach Over load thet time differencilal relay operate or not ?

5 Answers  

---

What is meant by Energy Efficient Transformers??? give significance

1 Answers   MahaGenco,

---

If a line which is drawing approximatly 2100amps what should be earthing streep size(using galwanize streep)?

2 Answers  

---

what is use of reactive power in ac ckt.

2 Answers  

---

The electromagnetic torque developed is proportional to what in a D.C series motor?

0 Answers   HPCL,

---

---

What types of question are done for diploma students in aptitude test

0 Answers  

---

1> what r different types of fault in cables? How will u locate and test these faults? 2> why earth wire is provided on top throughout the transmission line. why not only on towers? How much area it can protect? 3> what r different types of transmission losses? How power loss can be minimized? 4> what is the % of power loss on transmission lines?

3 Answers   IOCL,

---

We have 3 Gensets 1.500kva,2.380kva,3.250kva How can we connect in common busbar&we have variable load.

4 Answers  

---

for testing busbar (33kv) hi-pot .whether we can apply DC r not.and what is the test volt for that .explain

4 Answers   WGPSN,

---

what is pure resistive circuit and pure inductive circuit

1 Answers  

---

A circuit breaker is a

9 Answers  

---

if an induction motor is operated at unity power factor what will happen? will motor run or not? kindly describe a logical answer?

2 Answers  

---