Answer Posted / sridharan

Vector group means it define the primary & secondary side
connection type of the transformer says D for the delta
connections & Y for the star connections then the 11 stands
for the phase displacements between the primary side &
secondary side.In the sense in a clock while 11 o clock
shows the angle between the small needle & big needle will
be 30 degree, so the phase displacement will be 30 degree.

mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....

1898

---

what is the prosses for getting of 33kv licence (i have completed my engineering degree & working in 33kv substation for contract basis )????

1881

---

When we connect the large capacitor bank in series ?

1033

---

describe the A.C. Generator Testing procedure

2109

---

why is the conservator tank painted white on the transformer

3129

---

can i connect the two phases of scott connected transformer,if not why?

1917

---

how to erect roof control panel?

1985

---

What should be the magnetic balance test values for a 3 phase delta/star connected single primary dual secondary winding transformer (90 MVA / 2 X 45 MVA TRANSFORMER)

1847

---

in 1-phase 230v,how in 3-phase 440v. in each phase in between 230v.

2782

---

why is a power transformer used only occasionally?it is used to step up at generating stations?and that needs to be done all day long !!!!!!!

1814

---

WHAT DO YOU MEAN THE DIFFERENT TYPE OF CURVES OF RELAY LIKE STANDARD INVERSE, VARY INVERSE, NORMAL INVERSE, LONG INVERSE ETC....

1908

---

Write a note on Treatment for electric shock.

1853

---

What is the difference between diode and a transistor in terms of the direction of current flow?

2150

---

what is the difference between online & offline caliberation of KWH meters. Can Digital meters be caliberated

1925

---

Can Anyone suggest the Standards (IEC or IS) for selecting copper current density?

1340

---