Answer / natha

in dc traction in mumbai.the starting torque required to pull train is large here series motor comes into play and after a desired speed is achieved shunt motor runs the loco.

Answer / seshadri

we use differential compoud motors in electric welding

What are the conditions to be satisfied before connecting two DC generators in parallel?

9 Answers   Bhel, Godrej,

---

what are d/f between cfl and pl lamps,

1 Answers  

---

What different between kw and kva. why maser AC in kva.

3 Answers  

---

there is a power transformer 66/11kV in delta-delta connection has 5 feeder coming out from the secondary side. One of the feeder in it normally loaded (loaded than other feeder)and this feeder usually trips with double OCR causing the bank transformer to trip. Now if the load of this feeder is put on other transformer then that no problems occurs on that transformer or the load. However normally all the test(IR, PI, short ckt, open ckt,grounding test and other ) has been conducted for this but evertything transformer..... I am not geting what is the actual problem...

2 Answers  

---

What is open loop and control loop systems?

0 Answers  

---

Why is shaft current insulation required on large motors & when should it be checked i.e. before or after assembly?

2 Answers   Aramco,

---

what do u mean by knee point voltage?

7 Answers   TATA,

---

What is difference between safe PLC and normal PLC

0 Answers  

---

why T/F winding temp measurement cts are odd secondary current ie,109A/1.2A/1.4A?

0 Answers   MSETCL Maharashtra State Electricity Transmission Co Ltd,

---

Can we operate a DG Set in paralell with Transformer ?

6 Answers   NDDB, Sobha Developers,

---

how the find ct mf and mf roll in metering

1 Answers  

---

How to make vector group test of transformer?

2 Answers  

---