Answer / srinivas0699

If in any short circuit accured in that place taking current in KA so must be earth pin is bigger size.

I have a 600VA UPS for computer only. It holds for 20minutes only. 1. Can it be upgraded for longer period.? 2. Can it be used for one ceiling fan and a tube light? If yes, how to upgrade?

11 Answers  

---

what happen as when voltage drop(or may decrease) ? in case of atomic base theory?

0 Answers  

---

Why there are semi conductor layers on conductor and XLPE insulation of HT cables

1 Answers  

---

What should be the minimum and maximum ohmic value for earthing?

2 Answers  

---

how current rating of l.t cable is find

2 Answers   GAIL,

---

What is the difference between AC voltage and DC voltage?

6 Answers  

---

what is the difference between VARIAC,AUTO TRANSFORMER,DIMMERSTAT.

10 Answers  

---

v=r*i this means when voltage increases current also increases at constant resistance.... p=v*i this means when voltage increases current decreases to maintain the power constant which one is true...

3 Answers  

---

why hv current transformers have big size ?

5 Answers   RailTel, TCS,

---

Please give the formula for converting from 1 tr refrigeration to kw.

2 Answers   Bugema University,

---

we change the speed of the synchronous motor by incresing or decreasing a rotor resistance

1 Answers  

---

what is closing resistor in circuit breaker? why it used?

3 Answers  

---