Answer / 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)

Answer / k.prakashchandra

Charging current required is 10% of AH.So 12 x 400 watts
minimum has to be the capacity of the DG set i.e. minimum 5 KVA

Answer / k.prakashchandra

Minimum 5KVA

Why Dyn11 Transformer is selected for distribution transformer?

3 Answers   JK Associates, MSETCL Maharashtra State Electricity Transmission Co Ltd,

---

How much weight an electrical engine can pull??

0 Answers   Maruti Suzuki,

---

why we are using star connection and delta connection? difference?

5 Answers  

---

i am studying in final year can i allowed for 23rd UES of Indian army

0 Answers   TCS,

---

how the B-H loop obtain under the static condition

0 Answers  

---

how to select a breaker (MCB,MCCB,ELCB) for 18.5 kw, 3 ph. 480 v, 60 hz induction motor?

4 Answers  

---

what are lightning masts?what is their purpose???

1 Answers   Mecon,

---

what is the signification of trivector meter? why its name is trivector meter ?

3 Answers  

---

i have 2 motor of same rating. on no load condition one motor take 1.6A but other motor is taking 4.8A. what is the reason of this. please explain with proof.

8 Answers   Ambuja, UltraTech,

---

Diode is active or passive element?

14 Answers   Infosys,

---

What should be value of Circuit breaker operating time and tripping time?

3 Answers  

---

how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size

0 Answers   Tyco,

---