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.

why should the lowest unit of a testing transformer ( cascaded transformer ) have higher power rating??

0 Answers   TCS,

---

Can the field winding in synchronous machines be placed on stator?What is the limitation of such arrangement?

2 Answers  

---

What is an isolation transformer?Why do we need isolate circuits?Where do we use them?

2 Answers  

---

Whats difference between a single phase & a three phase motor?

4 Answers  

---

why is one voltage transformers (instead of three ) installed at the entrence of the incoming line in a substation.

2 Answers  

---

Here iam a question with SYNCHRONIZATION PANNEL related issue, as i want to design a SYNC.pannel board iam giving the 2 nos of 1MVA Generators to sync pannel , then what wil be the out put of the sync pannel, whether it wil be one cable coems from the sync panel or two cables.. as iam using two transformers to meet my load demand, so pls clear me whether two cables comes from sync panel to connect to transformers or only one cable

3 Answers  

---

how we control the magnitude of a generator output

2 Answers   EESINT,

---

Actually why the transformers ate rated in KVA.?

2 Answers   Torrent Pharma, XYZ,

---

how much current and power in watts can be carry by 2.5^2mm cu wire and 4 core 10^2mm Al cable?

1 Answers  

---

IF we have 500kva transformer 11.0/0.415V, 50Hz. How to calculate the current on HT & LT side, how can we consider for its breaker (HT & LT both)? You are requested to solve the question herewith.

3 Answers   Bhutan Power Corporation,

---

Why scr and igbt used in  ups systeam ????

1 Answers   JLL,

---

what is power factor?

7 Answers   CA,

---