how u change the vector group of a transformer like DYN1 to ynd11

2 Answers  

---

wht is the purpose of the earth electrode other then earthing

1 Answers  

---

what is the constructional difference between a power transformer and potentian transformer?

0 Answers   BTM,

---

Size of the 60Hz and 400Hz transformers is a) same b) 60Hz Tr s larger than 400Hz Tr c) 400Hz Tr s larger than 60Hz Tr d) None of the above

5 Answers   Ecil,

---

When testing an earthing connection, we use a 60 or 100 candle bulb with a phase connected direct from supply and the other wire to the new earthing provided.If the bulb glows then the earth is ok.Else earth connection is not Ok. So, why dont we can use all the home appliances taking a single wire from the phase and the return connection to Earth instead of return connection to neutral?

2 Answers  

---

---

How do you calculate the actual power consumption of an inductive load appliance. Say, a deep freezer of 200watts

0 Answers  

---

why we have to do tan delta test of the transformer oil???

5 Answers  

---

Can you use a different size cable to complete a circuit if you run out what you are using?

2 Answers  

---

how to check a three phase induction motor by multimeter & megger?

2 Answers  

---

why aggregate is placed all around substation ground.

1 Answers  

---

What is core CT & it's function?

0 Answers  

---

What is the two pole structure?

0 Answers   Foxconn,

---