Answer / sujit

Genaraly we signify ratings for any machines in terms of the
losses that the particular machne causes. So in transformer
generaly 2 types of losses can be occured those are cupper
loss and core losses. Where core loss is in terms of Voltage
and copper loss is in terms of current. So to calculate the
rating of a Generator or T/F we consider these 2 terms
Voltage and Current so we consider ratings in VA ( KVA ).

Answer / nidhi

as active power supplied is in kW . but we don't know its
power factor of the load that will be connected to that
generator or transformer. VICos(angle). so we can
calculate it through voltage and current only (V*I) at the
secondary or primary .not by the (VICos(angle))

why white color LED light is not possible?

1 Answers  

---

Earth bits close or open. Which is correct

0 Answers  

---

What are test signals and their significance?

0 Answers  

---

hwat type of motor is used in thermal gas turbine hydro nuclear power plants and why

0 Answers   Bhel,

---

why induction motor take more current when motor start time and this current take for 1 hours when motor is start.

2 Answers  

---

1) How to calculate battery backup for ups as well as solar with complete formula elaborately......

2 Answers  

---

For Synchronisation of DG Sets Sometimes we people use NIC (Neutral Isolation Contactor) Instead of 4-pole ACB or any switchgerar..Please guide me why is it so????

4 Answers   Piramal Glass Limited,

---

Difference between split ac and cassete ac?

1 Answers  

---

What is the difference between 2 wires RTD's and 3 wires RTD's.Kindly explain the wiring diagram.

1 Answers   QAFCO,

---

what is d main difference between KVA and KWA

2 Answers   Charoen Pokphand,

---

According to ohms law voltage proportional to current, then why should current rating is low with high voltage rating in transformer?

5 Answers   KEC,

---

like the transformer another electrical static device which operate on same priencipal?

13 Answers   Power Grid, Vishal Transformers,

---