Answer / hari krishna maganti

we r not useing always 2 or 3 phase suply..
for singie phase suply neutral is must.....

Answer / mintuk1@gmail.com

For transmitting the power generating substation transformer should connect delta star for step up at high voltage also getting ground wire for reducing third harmonic current in transmission line.

Answer / bhramit agarwal

bcoz ie is in star per phase voltage is 1/3^1/2 times the line voltage.so overall voltage decreases.and loss in a line is decreased.

Answer / suresh apgenco

to provide path for third harmonic currents and as line
voltage is equal to phase voltage, size of the conductor
will reduce.

Answer / prateek negi

BCOZ STAR POINT GENERATES NEUTRAL AND ELECTRICITY IS
DIDTRIBUTED IN THAT FORM WITH 3 PHASE AND ONE NEUTRAL

what is load despatching

0 Answers   NTPC,

can we use generator(a.c) as a motor.if so how if not why.

2 Answers  

50 electric bulbs are connected across supply of 220 volts. After one bulb is fused remaining 49 bulbs are again connected to same supply. which case will have more illumination & WHY????????

5 Answers   KJ,

25 kvar capacitor , how much current ? For 25 KVAR--Capacitor I = ?

3 Answers  

What is the difference between MCCB & MOCB?

1 Answers  

What is the phase relationship between the primary and secondary voltages of a transformer?

0 Answers  

why do we use LPF wattmeter not UPF in the experiment of no load and blocked rotor test of 3phase slipring induction motor?

3 Answers   Matrix,

What are the factors influence the choice of an electrc drive?

0 Answers  

what is the difference between earth and neutral?

1 Answers  

Why star point of star connected motor is not grounded? Why alternator is operated at lagging power factor?

3 Answers   TCL,

how to extend relay operating timing in 24V dc relay card (without using Timer )

0 Answers  

which theorem is used to analyse fault a)thevinin b)Norton c)Superposition d)jordan

1 Answers   FFC, NTS,