Answer / shahbaz shaikh

in the above answer he told that the field winding is in
rotor but it is wrong because the field winding is wound on
the stator incase of d.c motor and it is stationary and the
armature winding or counductor placed in the armature slots
and the external supllay is given to the field winding and
it will produce the rotating magneting field.

Answer / mrinal kumar

Field wire/ winding- it is used as a primary source of flux when current is passed through it. It is also called as exciting current. The current flowing through it is always dc.

Armature wire/ winding-it is an arrangement of conductors in which emf is induced. Practically armature winding is placed on the stator while field winding is placed on the rotor

Answer / danishdeshmuk

Can we distinguish these two by measuring the resistances ?

Whose resistance should be higher & whose should be lower ?

Answer / mrinal kumar

friend field winding is wound on the rotor only and yes dc supply is given to the field winding which will lead to the rotating magnetic field

Answer / mrinal kumar

see, starting current is very high in dc motor & is nearly equal to the supply voltage. and since supply is given to the field winding so you can say starting current is high in field winding and thus its reistance value is very small or negligible. Armature current flowing through armature winding is connected to the load so depending upon the load current its value fluctuates.

the site measured knee point voltage of protection class CTs should be greater than rated knee point voltage? what about meetering class CTs. Should it be below the rated knee point voltage?

0 Answers  

---

is synchrnous pannel is need for two eqal rating transformers to run in parallel

1 Answers  

---

What is meant by the KA-rating of a circuit breaker? In this regard, discuss the stresses experienced by the circuit breakers

3 Answers  

---

What types of I/O have you designed? What were their size? Speed? Configuration? Voltage requirements? Process technology? What package was used and how did you model the package/system? What parasitic effects were considered?

0 Answers  

---

Define active filter?

0 Answers  

---

---

Short circuit current of 2500 KVA 11/0.415 KV transformer both Secondary and primary side. best regards. Ali

1 Answers  

---

What is a soft start?

1 Answers   Focus,

---

which pole motor is best ?4 pole motor or 6 pole motor,why?

2 Answers  

---

The height to which the liquid in a tank to be maintained for a certain constant velocity?

0 Answers  

---

as per IE stranded what is max voltage between neutral to earth. 100 kva transformer neutral solid earth. min and max values i need to ans for RTI question

2 Answers  

---

how to calculate the current carrying capacity of cable

2 Answers   Bhel,

---

What is mean by making & breaking capacity of circuit breakers?

3 Answers  

---