what is ideal insulator. what are its parameter. Is poecelain insulator comes under this category.

3 Answers  

---

why we maintain 50hz ,220volts,20Amp,ratings fixed every where in india,,electricity

1 Answers  

---

why transformer ratinh is in KVA????/

8 Answers   Apollo, Priyadarshini, Reliance,

---

How can we calculate the KVA rating of a Distribution transformer from its core details?

0 Answers   ABB,

---

How will polarity test of Dy5 transformer ?

2 Answers   BSL,

---

---

how to work droop ct in generating station

0 Answers  

---

An 11kv system consisting of an underground cable to a sub station about 300 meters away was shut down for about 10 hrs. On energising, it tripped off on earth fault about 10---20 mins later 6 times but since than it is not tripping.its already 3 weeks now. The SPAJ was found to be fine. what could be the cause.No test had been done to determine the cause of the trippings till now because of demand.

2 Answers  

---

how to find total current when kva is 30.4 given ? should we use root 3 (1.732) in the formula?

2 Answers  

---

Hi i want to know that in generation station what we are generate either voltage or current

1 Answers  

---

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

2 Answers  

---

1 Ton = ? amperes & power. How much power 1.5 TON split AC consumes in an hour at 17 C , 26 C & 28 C (thermostat' temperature).

18 Answers   Aamal, Ashiana Housing, Carrier, College School Exams Tests, Eastin Hotels, Godrej, LG, Medha, Medha Servo, Onida, Orean, PEL, Sahara, Voltas,

---

we can stepdown the voltage from 230/12v ,and we use the voltage for various electronics components why can't we step up the voltage from 12/230v if we can shall we use the voltage for domestic single phase supply

5 Answers   Areva,

---