Answer / balamurugan

online ups no change over time (0 ms)from EB supply to Battery supply. offline ups some mls time to change over from EB supply to battery supply (more or less 3 ms )

what is earth-fault?when it occurs? to check where it occurs what type of test should we do?

0 Answers   ONGC,

---

meter ratio is 100/5 CT ratio is 125/5, when the ratios changes i.e., CT ratio is 125/5 meter ratio is 100/5 what is the MF in boths conditions?

1 Answers  

---

PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F

0 Answers  

---

why rotor current reading is taken & why not stator?

4 Answers  

---

Which is the best protection in case of shortcircut fuses or mccb ?

2 Answers  

---

Best way to measure the Soil resistance of rocky soil, three probe method and four probe method

0 Answers  

---

What should be the height of basement according to NBCC code?

0 Answers  

---

please tell 1 ton equal to how many kilo watt?? in some converter software's that is 3.5 kw. is it right?

8 Answers   Mitsubishi,

---

what happens if sf6ckt breaker gas pressure is high or low about the actual rating of gas pressure(5kg/cm2)

2 Answers  

---

Why transformer rating in KVA? and Generator also?

6 Answers   Bhel, IEEE, Toyo Denki, Toyo Engineering,

---

HOW TO CALCULATE CT AND VT RATIO IN PRTECTION AND METERING?

1 Answers   College School Exams Tests, L&T,

---

why the flooring of substation is done with small pebbles or stones..?

16 Answers  

---