1)What will happen when 240 VDC supply is connected to 240VAC supply(DC supply +ve is connected to phase of AC supply & DC supply is to neutral of AC supply). 2)Also what will happen when 240 VDC supply is connected to 240 VAC supply in reverse polarity as of Sr. No 1.

2 Answers  

---

What is a parabolic signal?

0 Answers  

---

What is annunciator ?

1 Answers  

---

how can we know the size of cable cross-section from current rating ?

3 Answers  

---

how to define vector group of transformer

1 Answers   Engro, Reliance, TATA,

---

what is diffential relay? testing proceure?and transformer reach Over load thet time differencilal relay operate or not ?

5 Answers  

---

Though transformer consist winding which usually cause reactive power change in both generator and motor but it wont affect reactive power passing through transformer why?

2 Answers   Jindal, Reliance,

---

why the LED of my electrical meter glows even after the line has gone. what actually the reason?

3 Answers  

---

tell how current tranfomer works

2 Answers  

---

Why relay connected R phase and B phase.?

1 Answers  

---

what will be the efficiency off x'mer during no load test and during short circuit test

1 Answers   GPSC Gujarat Public Service Commission,

---

What is Class and accuracy in CTs? Types of Classes and important of Classes?

2 Answers  

---