Answer Posted / cnu

Generally the power is transmitted in 3-Phase DELTA
circuit. where as lighting is conneted to single phase. and
lighting load is totally unbalanced so a delta circuit
cannot be used in supllying a lighting load due to non-
availability of neutral conductor.

for this purpose a lighting transformer is used which
transforms the 3-phase delta circuit into a 3-phase star
circuit. which can be used to supply single phase
unbalanced loads due to the availability of neutral wire.

the transformer can be used in transforming any voltage
level.

What are the various types of BUSBAR Schemes? explain each

5335

---

do you have some of interview Questions in power and genrator section in general whith answers

2186

---

Earth leakage relay basic knowledge principle

2191

---

what will happen if earth of 33 kv cable (earthed system) is not connected to earthing pit?

2037

---

11kV capacitor bank of rating 2.4KVAR, is charged with protective relays of only over current & Earth fault &.......without Over Voltage, Under Voltage & Neutral Displacement Relay. Is it advisable??

1603

---

What is the relation between frequency and motor rpm?

1860

---

If a 3 phase induction motor is in off condition in the conveyor and rotor of the motor keeps moving with the conveyor than the resistance of windings of motor varies. why is it so ??

2010

---

What is a dc motor?

1179

---

advantage and disadvantage of team work?

1707

---

what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

2266

---

Comparision of Air break circuit breaker, SF6 Circuit breaker and vacuum circuit breaker.

2371

---

WHY EXCITER PHASE SEQUENCE ARE OPPOSITE THAN STATOR SUPPLY PHASE SEQUENCE IN SYNCHRONOUS MOTOR >

1912

---

What is the mechanism of WTI

1804

---

what is Anti-pumping?

1944

---

what is servo motor and how it works?

2295

---