Answer / biplabi

VA = V x I = Voltage x current

Answer / glenn20sal

first calculate the load going to be connected to the
transformer in amperes

kva = v*i
----------
1.732*1000

i=line current

kva rating of transformer = 2.5 kva (calclated)

where 2.5 is multyplying factor for future expansion of load

we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.

0 Answers   MTN,

---

State thevenintheorem?

0 Answers  

---

how to calculate ups and battery rating

2 Answers  

---

which motors are used in electric traction?

1 Answers  

---

Why PT is fitted in incomer panel.....?

1 Answers  

---

method to check earthing

5 Answers   ECC,

---

how to check IR values in alternator winding?

3 Answers   Birla, Naftogaz,

---

i have seen a picture of a power plant. in that pic. i saw chimney like giant structure which were spreading smoke like something...i want to know is it chimney or cooling towers, as my friends use to say.

2 Answers  

---

what we happen if 400 kvar cpacitor banks are on in manual mode and there is no load on mains ??????????????

7 Answers   HCL, Reliance,

---

power is the product of voltage and current.so we can measure the value of power just by using ammeter and voltmeter.......then why do we use a wattmeter?

5 Answers  

---

Why the tank of transformer is made rectangular not circular??

9 Answers  

---

Explain Active power,reactive power,how its related to each other , & inductive ,capacitive.

0 Answers  

---