Answer / prw

The earths of each alternator must not be connected at the
same time because this will result in third harmonic
current flowing causing excessive heating. The earth should
be switched so that only one earth is connected to ground

Answer / sudheer

if two alternators running parallel and both alternators
neutral grounded by one earthing strip, there is chance of
circulating current. because the unbalanced current flow
through the neutral of one alt.to second alt.by the neutral.
if both alternators earthing is separate , then no chance
of circulating current.

Answer / er. ankush miglani

the two types of earthing is used: 1. pipe type earthing
2. sheet type earthing
NOTHING WILL HAPPEN WHEN TWO ALTERNATORS ARE WORKING
PARALLEL WITH EACH HAVING ITS OWN EARTHING.
NO THERES NO POSIBILITY OF CURRENT CIRCULATION.

How to improve the power factor from 0.8 to 0.98? Also tell me cost vs benefit analysis.

2 Answers  

---

what is difference between armoured cable and un armoured cable

2 Answers  

---

what is the difference between ac and dc?which one is more efficient?and what r their advantages

1 Answers  

---

Give details on how you intend to handle a challenging position you are posted to manage unexpectedly as a company staff?

0 Answers  

---

what are the advantages by using IGBT in VSC HVDC than thyristor in conventional HVDC

1 Answers   Bhel, Eskom,

---

---

what do you mean by cl PS CTs? What are technical details required for it's manufacturing?

1 Answers  

---

power transmission pole used one support , that only for support or earthing

0 Answers  

---

While connecting the flood light plug on to the 415 V distribution panel,there was spark and the cable got burnt. Three ignitors of the flood light also burnt of. The lamps are of 400 W (total 6 lamps) connected through 1.5 mm2 cable. The plug was immediately removed from the circuit. There was a 30 mA RCD connected and a 250 A MCCB; however both did not trip. What could be the possible reasons for the circuit devices not to trip?Can someone assist please. Additional info if needed can be provided.

2 Answers  

---

Do Phase angle measurement have any application in freq/harmonics measurement? If so how?

0 Answers  

---

could anybody able 2 send me jindal steels previous papers fr electrical steam....pls send 2 my id if possible....sirisha.shaik@gmail.com

0 Answers  

---

3 phase supply is there Total kw 100 howmuch cable put the load

3 Answers  

---

In legging current reactive power is arise but in leading current which power will be arise ? and in this case, is active power more than rated ?

3 Answers  

---