Why stand-by earth fault relay and restricted earth fault relays are connected between neutral and ground in transformer?

1 Answers  

---

What is cable size of motor if starting current is 15.6 Amperes??

0 Answers  

---

When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?

0 Answers   HPCL,

---

Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??

0 Answers  

---

what is rating boiler

0 Answers  

---

what is the relation between frequency and inductive reactance in a d.c supply?

2 Answers   L&T,

---

Define piezo-electric effect?

0 Answers  

---

what is the principle of tubelight ??? what is the function of starter and choke ???

1 Answers  

---

i want to estabilish an loss energy storage system,such that it can store electricity lost during the transmission of electricity in conductor,so that this system stores energy lost during transmission and supply it to street lights during night

2 Answers  

---

How to test and satisfy the conditions of the vector group YNd1 for power transformer?

1 Answers   Areva,

---

How to calculate the cross section area for a 350 m cable, motor power is 26 kw???

1 Answers   Orient,

---

Name the different control schemes of electric rive.

1 Answers   DVC,

---