Answer / ramprasad thorat

as the copper loss depends on current and core loss depend
on voltage so it is easily possible to find the efficiency
of the alternator. also at the time of manufactoring we dont
know the power factor of the load. so the alternators rating
is in VA.

Answer / nitin

as the load (i.e. resistive /inductive / capacitive )on the
alternator / transformer is not defind so that the
laternator / transformer rating in kva.

kw= sqrt3*v*i*cosQ

resistive p.f=0,
inductive p.f=lagging
apacitive p.f.=leading

what is diffrence b/w -48vdc and +48vdc ?

1 Answers  

---

If breaker is undefined position, first step to do.

0 Answers   KSEB, L&T, Siemens,

---

Can anybody please refer the best and simple book for about Protection relays and in detail of all its protection ?

0 Answers  

---

In Designing the rating & accessories of a MCCB how to choose the type of releases..means what is the basis for selecting, thermal magnetic, electromagnetic & microprocessr based releases

0 Answers  

---

I want to put this query to SENIOR & EXPERIENCED ELECTRICAL ENGINEERS. 1)I want to know about the control circuit diagrams for control panels. I found it difficult to understand. Is there ant booklet through which we can learn the circuit diagrams? 2)I want to learn about conduiting, laying cables, preparing cable schedules and various techniques which is the part of building infrastucture(construction field). I don't have any experience in this area. I have experience in control panels only. that's why i am not getting any opening in building infrastucture (construction field).Can I get the job in this field as Trainee Engineer? How to enter this field? I need job in PUNE

0 Answers  

---

Hello everyone, somebody knows what is a "surplice power" ? The hole phrase is: "This rating is appropriate for a generator set paralleled with an infinite bus e.g. a national electrical supply network or grid where the generator set is run at 100% load, 24 hours a day, 365 days a year and any surplice power is exported into the grid" Thanks in advance.

0 Answers  

---

What is the difference between a Junction Box and a Marshalling Box?

8 Answers  

---

how to find three phase complex power in per unit and MVA?

0 Answers  

---

what is the function of breather in a transformer

29 Answers   Areva, Bhel, RKM Powergen, Vijai Electricals,

---

1.WHAT ARE TRANSMISSION LINE LOSSES DURING WINTER AND SUMMER SEASON? 2.WHAT ARE THE CAUSES/ 3.WHEN THE CORONA IS MORE?.,WHETHER WINTER OR SUMMER? 4. WHAT IS THE PERCENTAGE OF LOSSES IN TRANSMISSION LINE?

1 Answers   Coastal Energen,

---

hi friends can u tell me name of the sites where i can get animation of electrical machines......

1 Answers  

---

Rccb trip or not with out neutral connect in three phase welding machine

1 Answers  

---