WHWT IS USE OF VACCUM CIRCUIT BREAKER

4 Answers  

---

what is mean impedance?

7 Answers   ONGC, Wipro,

---

why we used servo motor insted of inducation motor?

1 Answers  

---

difference between ac and dc generators

4 Answers  

---

where was current transformer protection units used and why??

0 Answers  

---

---

Explain Analog and Digital signals?

1 Answers   UOG,

---

corona happens more in ac or dc?

5 Answers   MAHINDRA,

---

in a distribution board,if we have a load and we have selected a cable after making all calcs (Deratings and V.D , ect...) the cable we have selected was 10mm.sq. now, shall the internal cable inside the switchboard should be 10 mm.sq Like the external or it can be Less???? if somebody have an specs or information he can help D:

1 Answers  

---

Explain with example of functional requirements of protection relay in terms reliability, selectivity, sensitivity

0 Answers   NCC,

---

How can we calculate the resistance of earthing & how can we control it?

2 Answers  

---

will the introduction of capacitor bank parallel with the induction load reduce power consumption

4 Answers   Nokia, WAPDA Water and Power Development Authority,

---

how to estimate the breaker capacity of breaker,please give the one example( 6.6 kv breaker,800a)?????

2 Answers   Divis Laboratories,

---