Answer Posted / ravikumar

Ring Main unit, its used at main input to the industries. having the voltage input of 11000 volts. its having two feeders from same sub stations. incase of one feeder fails we may turn on another feeder. high profiles industries & offices using SF6 type of RMUs.

What type of core material is used for metering C.T and protection C.T???

2124

---

1.What is captive power plant? 2.What is national grid?Give brief idea.

2225

---

A cable with concentric PE conductor must be used with frequency converter circuits what does its means.?

1620

---

what is the voltage between earth & neutral in 3 phase electrical connection.

2007

---

explain different losses in a transformer.

1210

---

What is an 86-P or an 86-A trip

2128

---

if any body have question paper of railway (section engineering),then plz send me .i will thank of him/her.

2036

---

why magnet has north and south poles only why not east and west and why we are considering as north and south poles? why cant we consider as east and west?

2078

---

What is the reason of polyphase induction motor tripping suddenly on high current during running at 70% laod? Motor IR , winding resistance & inductance balance. Motor no load current is balance and ok as per mgfr. data.

2461

---

Is it good to short Neutral and Ground in the PLC or DCS main Power supply. Pls give YES or NO with reasons...? Simarpreet

2592

---

What are test signals and their significance?

1171

---

Why can't we parallel Voltage transformer secondary circuits?

1704

---

How do u analyse protection fault when vcb tripping on load

1701

---

I want to design a heating coil of 80/20 nicrome for 3.5KW please give me the calculations choosing for physical dimensions assume coil voltage will be 110V AC assume necessary conditions

1654

---

What would be the size of wire used for 2 Ton of window A.C?

1967

---