why the neutral point is zero in star connection?

4 Answers  

---

how to select fuse in any circuit? if with fomula ?and examples also

1 Answers  

---

how can we measure 220kv or more than these voltages ...?and also how can we conform whether we r getting 220kv from generating stations throuth the h v transmission lines?

1 Answers  

---

what is stray loss in transformer?

19 Answers   Vijai Electricals,

---

What is function of inverter? and who it's operate & what are controlling devices are used?

2 Answers   Carrier, Dalkia,

---

1)what is the function of a frequency inverter? 2)If a few frequency inverter are connected onto a device network,what are the two setting that will ensure the frequency inverter work properly on the network. 3)whats is the name of the input sensor for weigher? 4)How to confirm that the load cellis faulty? 5)Describe briefly the steps to validate that the weigher is working properly? 6)Describe the procedure to validate the flowmeter accuracy? 7)Describe briefly the steps to validate that the tempreture sensor/transformer is working properly. 8)what is the adjustment that need to be done when you are calibrating the temperature transmitter ? 9)what are the safety measures to be taken before disconnecting motor for rewinding. 10)whats is the synchronous speed in rpm of typical 4pole 50hz motor? 11)whats is the formula for kw, ohm's law 12)if a 3phase motor is rated 3kw,415vac,what is it's rated ampere?

0 Answers  

---

what is diff. b/w of earth & neutral?. why we are separately using ?

3 Answers  

---

What is the meaning of high reputuring in HRC fuse.?

1 Answers   ABB,

---

how air lock will be removed from generators, how it happens?

1 Answers   ABC Engineering,

---

sir, how to select the cable size, what is the parameters use ang what is the formulas use for this cable size calculations. please tell me.

4 Answers   ISRO, Power Grid,

---

how to convert single phase supply to 3 phase or 3 phase to single..?

7 Answers   Wipro,

---

Which power will flow first if we switch on a motor? Active or Reactive? How?

5 Answers   NPTC,

---