What is the different between buchholz relay and pressure relief device?

2 Answers  

---

what is stper motor.what is its uses

9 Answers   Bhel, HCL,

---

why we are using star connection and delta connection? difference?

5 Answers  

---

What is formula calculation size cable wire ?

0 Answers  

---

Is it benefitial to supply 210v ac to lighting fixtures instead of 240v ac?

2 Answers  

---

---

WHAT IS THE DIFFERENCE B/W THREE POINT STARTER AND FOUR POINT STARTER

1 Answers  

---

why 15 kw motor winding resistance is low then 5 kw motor winding resistance?

0 Answers   Baosteel,

---

area control error

0 Answers  

---

How would you supply power to a village which is very far from a sub-station and has only a 11k?

4 Answers   Power Grid,

---

lightning arrester rating selection procedure: (line to line voltage(kV)/(squ.root of 3))*squ.root of 2. now the question is, IS this above formula correct for both STAR and DELTA connected system???

1 Answers  

---

What will happen if we give 220v supply on both sides to the bulb

7 Answers   Exide, Sumeet Industries, Toshiba,

---

Why mostly the HV side of transformer has Delta?

0 Answers  

---