What is vector group? What is meant by DYN11?Why is it needed?

13 Answers   Areva, Bhel, BRG, Escorts, Fortis,

---

which element is neglected during fault calculation? a)resistance b)inductance c)capacitance d)reactance

4 Answers  

---

Which of the following are ill suited for energy efficient motors application?

0 Answers  

---

What is the effect of impedance on the heat losses in case of AC system??? Does heat losses really depends on the impedance or depends only on resistive component only..??

4 Answers  

---

What will happen if 60 Hz rated transformer is connected to the supply of 50 Hz say 415 V (3-phase) step up to 3.3 kV...?? ?

2 Answers   Essar,

---

I have finish diploma electronics and five years experience in electrical field in ht service how can i get c licensce or other electrical certificate

0 Answers  

---

Define reserve-generating capacity?

0 Answers  

---

why corona ring is used in out door switchyard lightning arrestor

3 Answers  

---

is earthing is necessary if we use armoured cable

1 Answers   ABB, Schwing Stetter, Siemens,

---

A synchronous motor is operating at a leading power factor .if the applied voltage is decreases ,(the excitation remains constant ) ,the motor current a)increases b) decreases c)remains same d) none of these

2 Answers  

---

what is cathodic protection and why it use in industries?

0 Answers  

---

installation of subsatation of33kv

0 Answers  

---