Answer / faizan

For cable selection we need supply voltage,load current and distence between source to load end ,then we can choose the size of cable and also it depends on meterial of cable,( cu/alu )..

Answer / pratap

70 ton=245280watt
I=245280/1.73x440x.8
 
  =402 Amp
cable size 400sq.mm(3 phase +neutral)

A system absorbs 100 k J of heat and the increase in its internal energy is 100 kJ; the work done is

0 Answers   Caterpillar,

---

What is the effect of positive feedback on stability of the system?

0 Answers  

---

describe the fully control circuit diagram of ac drives

0 Answers  

---

why dc supply is not applied for step up or down in transformer

3 Answers  

---

what are the current specifications of bus ducts ? i ve seen in IPBD bth 22000 A and 1500 A in 400 kv switchyard . why it is so??

1 Answers  

---

---

Why dc shunt motor in lathe, compound motor in rolling mills

1 Answers  

---

What is mean by CT Saturate? how do we calculate?

5 Answers   ABC,

---

The speed of a dc motor can be controlled by the variation of 1. armature voltage. 2. field current. 3. armature circuit resistance. 4. angle of brush shift. Which of the statements given above are correct? (a) 1,2 and 3 (b) 2,3 and 4 (c) 1,3 and 4 (d) 1,2 and 4

1 Answers  

---

what is polarity in ac system? and how do identified?

1 Answers  

---

Which cable is use for rtcc control panel

0 Answers  

---

why white color LED light is not possible?

1 Answers  

---

WHAT IS THE MEANING CREEPAGE DISTANCE

1 Answers  

---