Answer / muthuvel

In Transmission of Electrical Power,There is no need of Single Phase Output.The neutral is required where ever the Single Phase output is required.And If it is Star system means
we are required to give Three phase Four wire It is economically not good.So only Power System Always having Delta System in Transmission and Star System in Distribution This is very small basics of Transmission and Distribution System.

Answer / subbiah

Neutral is not necessary in transmission

Answer / saji

3 Pahse, 3-wire system is more economical than 3Phase - 4
wire system.

Answer / sounderraj k

To save cost, As Delta connection is three wire system
where as Star connection is four wire system. The neutral
point is made by local Earthing at distribution transformer
secondery end

A ceiling fan moves Counter clockwise & a pedestal fan clockwise.....y the difference????

5 Answers   Alstom, NTPC,

---

What will happen if the interpoles in case of a generator have opposite polarities to that behind it in the direction of rotation ?

1 Answers  

---

why return path in terms of neutral is required please give a relevant answer

3 Answers  

---

what is the calculation of current when a clampmeter is attached to two phases of any drives.

3 Answers   ABB,

---

why mosquito bat makes noise when it hits with a insect?

2 Answers  

---

---

FOR 3 PHASE DISTRIBUTION,WHY WE USE ONLY THE VOLTAGE LEVEL OF 440 VOLTS

1 Answers   AITM,

---

IN MY SYSTEM THERE IS ONLY OVER CURRENT EARTH FAULT RELAY IS AVAILABLE. FOR THE UNBALANCE SENSING IS THERE ANY RELAY IS AVAILABLE? THE SAME CTs WHICH ARE USED FOR THE OVER CURRENT EARTH FAULT RELAY CAN USE FOR UNBALANCE ALSO?

2 Answers  

---

What is the earth treantment procedure?

0 Answers  

---

if the diameter of a conductor is 'R' then what is the distance between two bundle conductor in a phase?

1 Answers   NTPC,

---

how do we calculate cable sq mm size,that if 50 A load

2 Answers   GTL, PowerTech,

---

Differnce between earthing and nuetral

3 Answers   S Tech, wbsedcl,

---

what is rating providing of contactor,relay,fuse unit for motor output power

2 Answers  

---