Why Humming noise originated in Starter motor and how it was generated ?

3 Answers  

---

why a three phase induction motor cannot run at synchronous speed ?

7 Answers   RUET,

---

Why are some relay circuts designed to have the ct current flow through the neutral instead of the phase wire, such as in some diff relays?

1 Answers  

---

What is difference between PVC cable & XLPE cable?

14 Answers   Intertek,

---

high voltage transformer input voltage,current and amps rating..distributed transformer input voltage,current and amps rating...

0 Answers  

---

---

what is the function and use of oil filled cables specify its advantages and disadvantages

7 Answers   Alstom,

---

what would be the earth to neutral voltage in industries? if it is not main Taine then what will happen?

4 Answers  

---

control wiring purpose,standards, ferrule code standard, interlock, schematic, symbol

1 Answers  

---

what is the acceptable earth resistance value ?

4 Answers  

---

We have two Al.busbars each of size 125mm*10 mm connected in parallel.To increase the current rating ,can we connect third busbar of size 100mm*10mm in parallel to existing two busbars?In my opinion ,if we connect busbars of different sizes in parallel,then the busbar of lowest size will take much current.So this type of paralleling should be avoided .Am I correct?

1 Answers   PDP Steel,

---

what is the diffrence between resistive load and capoasitive load.?

4 Answers  

---

what's the activities of reactor in Buchholz relay?

1 Answers   Yahoo,

---