Answer / kumaravel

principle of zener diode

WHAT IS THE DIFFERANCE BETWEEN IP54 AND IP55

2 Answers  

---

what is the reason for connecting hvdc monopolar line with negative conductors

0 Answers  

---

whats the reletion betweet flow,pressure,head,rpm and motor rating?

1 Answers  

---

What is PIR (pre inserting resistance) in 400kv EHV SF6 BREAKER? Why it use?

1 Answers   Adani,

---

HOW TO SELECT THE COPPER CABLE SIZES OF MOTORS,TRANSFORMERS?

0 Answers   Eastern Produce,

---

why dc power can not be used in transformer?

33 Answers   GE, Sail,

---

How to select a contactor? How many types of contactors are available

0 Answers   TCS,

---

What is surge impedence and surge loading....???

1 Answers  

---

which fault is severe and why?between lll fault and lllg fault which fault is severe and y?

0 Answers   GE,

---

What are safety device in vcb and acb?

0 Answers   IOCL, L Usine Fashion,

---

How Earthing is prevents shock?Explain

4 Answers  

---

what is the use of back emf?

1 Answers  

---