Answer Posted / minal

Transformer are always rated in Kva because there are 2
losses in transformer.
one is copper loss which depends on current & the other is
iron loss which depends on voltage & not affected bypower
factor.
Thus transformer rating in kva & not in kw.

Draw the line diagram of diffretial relay connected to transformer?

2432

---

Why i receive the GCU fault in my DG Sychronization panel . what all the factors considered for this fault .

2222

---

why use phase displacement in transformer.and effect of phase displacement on transformer

2860

---

Why do we perform an open-circuit test and short-circuit test on the transformer?

1107

---

what reactive how to maintain

1837

---

Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?

1896

---

block diagram of 2 ups system connected in parallel mode?

2071

---

What do you mean by an instrument transformer?

1070

---

what is efficient motors and how it is different from normal induction motors

1907

---

What is a dc motor?

1161

---

How to know the following data of synchronous generator 1. D-Axis Unsaturated Reactance 2. D-Axis Unsaturated Transient Reactance 3. D-Axis Unsaturated Sub - Transient Reactance

1998

---

If there is major % of Voltage harmonics in the system, how can it be control or reduced?

1977

---

for what voltage will reactive power be largest in 380 kv line : a) 375kv b)380kv c)385kv

1474

---

to hook up ten 50 amp rv pedastels at a lenth of 600 feet from the service what size will my service need to be and the size of wire will I have to run to each pedastel in series??????

2083

---

Compare salient pole and cylindrical rotor machines.

1879

---