Answer / saket

Vab is potential of node a with respect to b .. so b is taken as the reference

Do I need a special Transformer to put 240 VAC 3 phase into it and and get 480 VAC 3 phase out of it to run a machine? Or, do I just use an ordinary step down transformer and step up the voltage? Thanks

2 Answers  

---

draw a dol with the following rtds,stop/start,ct,vt and o/l supply is 6.6kv and the coil is 110v

1 Answers   Anglo Eastern,

---

can a synchronous motor be made to rotate in a clockwise direction ?

1 Answers  

---

last week we did the REF relay test by closing single pole (R phase) of CB and apply 380V at the primary of delta transformer. we get 33A at the primary of the R phase star end. but we get 380A at both R an B in delta side. how and why?

1 Answers   Siemens,

---

what is mean by hvdc transmission technology .what is principle of hvdc transmission and technic of hvddc transmission .

1 Answers  

---

---

how can I calculate charging current of cable/overhead conductor? what is roll of voltage in it ?

0 Answers  

---

Why ground terminal is used in pot meter 10k ohms

0 Answers   Mahle,

---

1) name the communication cable and how it is communicate in between plc to modbus , plc with hmi? 2)name of the communication cables?

1 Answers  

---

why we use negative feedback in control system.

2 Answers  

---

What is the Difference Between MCCB & ACB & VCB

3 Answers  

---

What are the Return ( Monthly / quarterly/ Annual submitted to Electical Inspector for an establishment (Factory in Maharashtra-- Small scale category having seperate HT line of 22KV ) as per Maharashtra Electricity Act

0 Answers  

---

How you give clearance to a spare feeder.

0 Answers   KSEB, L&T, Siemens,

---