Answer Posted / anil

In overhead cables, we donot require any cooling media as
air is cooling media. whereas in Under ground cables, in
pucca trench, we put sand around the cable before is it is
cemented.The reason for sand is that it absorb water and can
help in transmit the heat from cable.

All the socket in a room become very hot, the Wall was also became very hot and the earth conductor also became live, what in your view might be the possible causes?

1652

---

If we have to feed a housing complex having load 8MVA, than what would be the better option, either we first step down 33kv supply into 11kv & than 430v or we proposed no of 33/.44 kv transformer, also which option is economical?

2220

---

use of PIR in ehv breaker

2156

---

what is the difference between ac motor and dc generator

1843

---

During regenerative breaking= A rotating magnetic field is reversed B slip is positive C torque is positive D slip is negative

2125

---

How does "OUT OF STEP" relay ,for Synchronous motor protection, work?

4337

---

Is there any rule to select the voltage of motor based on KW rating? What is the rating above which lt motor becomes the HT motor?.

1713

---

Why in metering Ct for ammeters ct secondary side is grounded for each Ct but not in case of CBCT (Core balance current transformer)..kindly some1 highlights the reason..is it because net flux is zero?

1423

---

difrent between vcb acb sf6 and mccb breakers

5423

---

what is difference between line differential and transformer differential?

1732

---

Which type of air compressor is used now a days in the market. Keeping in mind of energy efficiency and maintenance points. Relevant documents may also be sent on mentioned email ids.

1666

---

Define branch?

1082

---

What is the loss of power of transformer 220kv/33kv,63/80mva of % imp12.05 at 80%load

1836

---

What is the one main difference between ups & inverter ? And electrical engineering & electronics engineering ?

1139

---

Is the theorem applicable to ac sources?

1027

---