Answer / varu shlok

transformer is static device which transfer energy form one place to other place at a time of energy transferring mode device get saturated and heated up for that AIR GAP is necessary for cooling as well as lenkage of flux for addy current purpose...

Why do you get a typical sound when the transformer is put into operation?

4 Answers   IIT,

---

Why we use RYB phase sequence?

3 Answers  

---

How can you justify a fully carged battery by physical checkup ?

12 Answers   Indian Military Services,

---

On what principle reluctance motors work?

1 Answers  

---

why Current is lead 90 degree and voltage is lag 90 degree in a capacitor.? why Current is lag 90 degree and voltage is lead 90 degree in an inductor.?

0 Answers  

---

---

What is the output voltage of a DG set.

3 Answers   Fitness First,

---

How can we increase fuel-power ratio of any DG set?

0 Answers  

---

Explain REF protection and sbef protection in transformer?

3 Answers  

---

HOW TO FIND THE PRIMARY AND SECONDARY OF TRANSFORMER(IN OFF CONDITION) USING MULTIMETER? IS IT POSSIBLE FIND BY SEEING RESISTANCE???

4 Answers   Areva,

---

What is MPCB, MCCB, ELCB, RCCB ? Explain them ?

2 Answers  

---

What is the difference between ARC & SPARK?

4 Answers   OPTCL,

---

how does commutator convert a.c to d.c?

0 Answers   NRSC National Remote Sensing Centre, RBC,

---