Answer Posted / reddy

Max Trans voltage in india is onnly 400kV as on 01-12-2010.
Now POWERGRID has given orders for construction of 765kV S/S
and Trans.Lines. and also POWERGRID has successfully done
testing of 1200kV. May be after few years we will see 1200kV
transmission lines and S/S's. i'm from POWERGRID.

Logic using 1 kV or 1,1 kV grade in house wiring Low voltage cable. Explain/suggest? some use 1kV and some prefer 1.1kV grade insulation low voltage cable why??

1599

---

can indirect loading be called as phantom loading?

2138

---

why connecting surge unit in contactor coil

1824

---

When will you multiply and devide with derating factors to the actual value while sizing the cable?

1887

---

What are the basic & Majour problems in UPS ?

2073

---

what is the difference between vector scale and vector diagram?

4375

---

how was your last weekend.

1745

---

what is the correct format to create a resume for interview??

1915

---

In Indian Household, generally we receive 220V AC single phase supply. But AC has 2 phases, +ve & -ve. So in +ve half cycle current is flowing...so what happens in the -ve half cycle?? Please illustrate.

1978

---

advantage and disadvantage of team work?

1651

---

It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.

3809

---

draw the restricted earth fault protection circuit install on power transformer and identify its parameters and draw C/C curve of it

2669

---

How do u analyse protection fault when vcb tripping on load

1576

---

Explain about retrofitting of machine tool.

1848

---

how invertor convert the dc into ac give brif detail

2088

---