hai iam arunkumar. i have applied for an section enginner in rrb. i want lat 5 years solved question papers. if u have please sedn it to arun30682@gmail.com

0 Answers   RRB,

---

is it necessarry to charge the battery of ups always??

3 Answers  

---

what do u mean by starting torque? how it should be for a good motor? what is the relation between starting torque and power factor? What is the relation between efficiency and starting torque?

2 Answers  

---

I have 90KW Motor 60 Hz,380V Pf 0,88. after testing the Motor without Load is the no load Current 36 A,but wenn i put load after 2 hours the current increase more than 156 A. Can anybode tell me waht is the Problem?

4 Answers   ABB,

---

what happens if earth of 33kv cable is not connected to earthing pits? please send this query's answer to ngrm.sudha249@gmail.com

0 Answers   Bhel, CFL,

---

1. Why transfomer reting in KVA and Motor in HP

11 Answers   AirIndia, Jindal, Mind Tree,

---

Advantages of using generator circuit breaker (GCB) scheme in a power station ?

0 Answers   Gridco,

---

what is the difference b/w permitivity and permeability

1 Answers  

---

why motors are rated in hp?

3 Answers  

---

what is blocking diode and what is the use of it in tne control circuit.Pls Explain it.

1 Answers  

---

Neutral to earth and phase to earth voltage how much.

2 Answers  

---

can transformer of different kvas be paralled

2 Answers  

---