Answer Posted / s.arul

power in DC circuit P = V*I
P = 12*4000
P = 48000 WATTS
so wanted power = 48000 watts
so, required KVA in DG set
KVA = POWER/POWER FACTOR
=48000/0.85
=56470.59 VA
=56.47 KVA
SO,REQUIRED KVA IN DG SET = 57 KVA (APPROX)

Dyn1 transformer vector group testing how to do

1850

---

What are root loci?

1150

---

Convert a star connected network into a delta connected network.

1163

---

What is touch potential and step potential?

2231

---

why burdens of VTs is more than CTs?

1847

---

what are the breakdown voltage rating of mini- curcuit'transfarmer!

2216

---

1.what is the reason for transformer and lightning arrester blast in 33kv system

3145

---

Give accurate definitions for these electric terms: Inductor Inductance Inductive Induction Reactance Reactive Esam Baraka ٢١ ساعة

1445

---

how we can calculate 2 phase welding transformer rating or total power?

1927

---

how to check regenerative load in drived motor

2299

---

how does grading rings & spacers in transmission line works? Working Principle?

2142

---

how was your last weekend.

1827

---

Mention the disadvantages of low power factor? How can it be improved?

1199

---

what does vector group Dyn11 tell us? also tell me how will u differentiate between phase lead and phase lag thru this vector group

2124

---

What happens if we connect a single phase energy meter in reverse polarity.

2415

---