Answer / infodoss

lightning flow is mainly low resistance side(i.e
TREE,CRANE,SUPPLY LINE).so only lightning arrester made
with low resistances.It is the main reson to observe the
lightnings.it Always fix the top of manual
operating.lightning arrester used to protects the
electrical equipment.

Answer / selvakumar.v

lightning aresster will protect the system from over voltage
normally design voltage is 80% of the maximum line to line
voltage.

What is your acheivements

0 Answers  

---

Why iron core transformers not used in high frequency applications ?

3 Answers  

---

if a train is running on a speed of 40 K MPH and crosses a individual passing by him in 48 secs who is riding a horse with a speed of 25 K MPH. what is the length of the train?

2 Answers  

---

how does oil cools the transformer

3 Answers   HBL Power Systems,

---

what is different between relay and plc?

3 Answers  

---

he compression ratio for a petrol engine generally lies between

0 Answers   Caterpillar,

---

if we increase the frequency given to a transformer then wat will happen to the transformer size, whether it will increase?

4 Answers  

---

i have a roll dia aprox.43 inches and gear box ratio is 14.3.so my question is how was decide the kw rating of motor.

1 Answers  

---

discuss thyrister convertor type of AVR.

1 Answers  

---

how we can select a transformer based on a particular load. suppose we have 4 motors of rating 40 h.p , 50 h.p, 80 h.p & 100 h.p. then what rating of transformer we can select. urgent. pls reply

6 Answers  

---

WHAT IS DEAD END IN PROTECTION?

0 Answers   Ispat, L&T,

---

In what voltage EHT works(133/132/33/66kv?

3 Answers   Adhunik,

---