why does rotor rotets?

0 Answers   IBM,

---

what is the temperature rise test? explain in brief.with formula.

1 Answers  

---

what happens when current(ac or dc)flowing through a boucket of water?please describe it.

3 Answers  

---

why contactor not provided between output of VFD and motor?

6 Answers   Siemens,

---

Can step down transformer works as step up one???

2 Answers  

---

Give some example of fault limiting devices?

0 Answers  

---

What is mean by discrimination of circuit breaker ?

1 Answers  

---

What will be the effect of in HT XLPE 220 KV cable when one side of the Armour/cable ends are not grounded. Will there is difference between 3-phase voltages? like: if A. Both End of Cable grounded Phase Voltages:- V1=219 KV, v2=220 Kv, v3=220 KV. B. One End is grounded other is not: than Impact on Phase Voltages:- V1= KV, v2= Kv, v3= KV. Remain same or unchanged??

3 Answers   Jamshoro,

---

what happend when 230v dc motor we supplied a 23v ac supply

3 Answers   Hero MotoCorp, RRB,

---

What is the difference b/w fanuc alpha series 16i and 18i controller. what is stand for i

0 Answers  

---

what type of protection and safety req. in the 220kv substaion and area around the substation

2 Answers  

---

WHY TRANSFORMER IS MEASURED IN KVA?

10 Answers  

---