Answer / s pavan sudheer

copper losses vary with load. Copper loss is I^2 R loss, when we apply load aromatically the current will be increased so it is finalized that current drawing is directly proportional to copper losses.
   

why we use primary delta connectin in hight voltage transformer

2 Answers  

---

what is negative phase sequence

1 Answers  

---

where was current transformer protection units used and why??

0 Answers  

---

what happens if commutator is removed in an dc machine?

3 Answers  

---

how to generator maintenance (A Check, B check,Etc)

0 Answers   Cummins, HCL,

---

why breaker closing coil gets burnt if supply is continously provided to it.

1 Answers   TATA,

---

how can we connect a distance relay to CT core that is for backup protection or metering?

1 Answers  

---

what is meant by neutral Ct of a transformer and how it connected in transformer

4 Answers  

---

We store the d.c supply...then why can't we store A.c supply???

4 Answers  

---

why earthing point in the 6amps/16amps socket bigger than the remaining (Phase & Neutral)points.

1 Answers  

---

If the Brush of DC motor is shifted by 90 deg, then what happens to voltage and torque? Both voltage and torque are zero. how to justify the answer?

0 Answers  

---

How to know the back up time for a 5KVA UPS which is connected to 15 nos. of computers? Is there any formula for this? pls. tell me.

1 Answers   HAL,

---