Answer / mahesh sali

dc supply given to the x'mer , there is no flux produced
into the transformer due to the absence of frequency ,
cause will be damaged of insulation of x'mer and its get
overheated

Answer / naveen

it will lead to burning of transfotmer because there will
not be any secondary emf hence tranformer will work like a
load itself & due to overheating it will burn.

Answer / guest

When DC is supplied to a transformer the windings in the transformer will make it a electro magnet. There will be no
effect on the secondary but when the supply is interrupted a
voltage will be induced in the secondary.

Why do we use only Sinusoidal Wave in AC supply why not the Square,Triangle or Sawtooth etc?

2 Answers  

---

Explain difference between aluminium coductor & copper coductor.

4 Answers  

---

How can I indicate rpm on digital rpm meter with help of simple tacho output? tacho output is 90v at 3000rpm.

2 Answers   Godrej,

---

If mutual flux is 1.2wb & power factor is 0.8 lag , then what is the Useful flux of a transformer?

0 Answers   Nalco, NTPC,

---

HOW WOULD YOU PRESENT THE POWER FACTOR PRACTICALLY ON A GRAPH

4 Answers   Bhel,

---

sir i had plane to do some project with the base of hopkinson test in AC supply its possible

0 Answers  

---

Can we use BS 6651 and BS EN 62305 standards for computer room lightning ptotection in substation?

0 Answers   Jindal,

---

why protection and metering CT's are always connected in star why not in delta?

5 Answers   Reliance,

---

How works the AVR in DG Sets Plz explain??????????

1 Answers  

---

What is DPR relay, And what for??

2 Answers   Engro,

---

Why the core in the distribution transformer is in even number

1 Answers  

---

why the transformer connected like STAR- STAR, DELTA- DELTA, STAR- DELTA, DELTA-STAR ...? why these connections ,,, explain the advantages these connections?

0 Answers  

---