Answer Posted / sudheer

we connect earth in all the machines to save machine and
man by electric shock. because the leakage current passes
to the earth by earthing wire.if we connect the earth wire
to neutral:- the leakage current will flow in the same
circuit and increase unbalancing.it is very dangerious for
man and machine.

Why the symbol of register is "zig zag"

1577

---

What is meant by rotor?

1268

---

best manufacturer for busbar for outdoor switchyard having double bus bar scheme, can any one share technical specification of busbar. 132kv voltage ?

1706

---

can any one tell in easy method for circulating current ??

2143

---

explain different types of d.c motors?

1141

---

in an electronic tri vector meter when the current and voltage sequence changes ? what is the effect of phase sequence on recording of meter

2228

---

What are the advantages and disadvantages of the dc motors?

1129

---

where lt & ht capacitor used

2219

---

In the N-series schneider reclosers. What is the difference between current during fault time and current at tripping? This appears in the Event log in an event of a trip out.

1857

---

Control cables in S's will carry 1000v which is AC R DC? Pls answer me 

2148

---

Why MCCB is Getting tripped sometimes when there is no load in the Midnight ?

1971

---

ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

2019

---

how make megger test for control cable like 12c x 1.5mm and what it apply voltage and test timing details.

2196

---

What are the common sources of energy?

1083

---

how to calculate singlephase motor efficiency?

2232

---