Answer / rams dharavath

The direction and magnitude flux of d.c coil remaining the same.DC coils give accurates and better lifting magnets and DC coils having no hystrises losses and heating problems.

Answer / kannan

While we will use ac supply for HV and Relays following
disadvantages are available.

1.Tripping feedback can not see.
2.ac source is variable source.

What happen when switch yard one pole not tripe when you tripping the breaker

3 Answers   Adani,

---

How to calculate the heat load for a electrical room

1 Answers  

---

What are the loading factors to be considered for transformer sizing/selection?

3 Answers  

---

why are caluculte transformers or dg's in kva does not caluculate in kw

5 Answers  

---

In a poly phase circuit if clamp on meter shows same load on three phases and their sum on neutral then why we use three and a half core cable or maximum the same size of core as that of phase?

1 Answers  

---

what happen if the secondry winding of the transformer is having less no of turns compare to the primery winding.

2 Answers  

---

what is black out?,what is brown out?

1 Answers  

---

What are safety seals?

1 Answers   HSL,

---

What is the diameter of electromagnetic field around a 11000/415v transformer ? Dose it affect people who live 3-4 meter beside it?

0 Answers  

---

What is the purpose of REACTOR in GIS substation?

1 Answers  

---

DC Motors applications used in Lift/Elevators

8 Answers   IOCL, SCS, Usha Martin,

---

What is difference between potiential,volatge and emf

1 Answers  

---