what the main difference of the 3 phase and 2 phase power supply??

3 Answers  

---

discuss thyrister convertor type of AVR.

1 Answers  

---

what is difference betwen genrator and alternator?

3 Answers   Tanfac,

---

can we amplify dc signals.how can it be done

4 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 the function of choke in tube

1 Answers  

---

why buchholz relay installed in inclined position

3 Answers   Eskom,

---

10. THE MOST COMMON TYPE OF THREE PHASE IN UNSYMMETRICAL FAULTS IS ........

6 Answers   SSC,

---

There is one 40MVA oil cooled transformer (yet to commission), filled with 95% oil and we are trying to fill 5% Nytrogen in that transformer so that there should not be any foreign component inside. But even though there is no leakage, nytrogen is not withstanding inside transformer, within a day or two pressure guage is showing 0. Why is it soooo? Pls reply.

1 Answers  

---

Frequency of rotor emf in induction motor is around A same as stator frequency B 50% C 5 % or below D 30%

1 Answers   Bhel,

---

why current increases when voltage decreases in ac system

10 Answers  

---

while checking the flourscent tube elctrodes some glow is cominag. this type of glow tube working or not working

1 Answers  

---