Answer / amritpal singh sidhu

DC machine is of two types: 1. DC Motor; 2. DC Generator
DC Motor:- Whenever a current carrying conductor placed in
magnetic field, it will experience a force.

DC Generator:- Electromagnetic Induction.

Answer / vishal ingle

DC machines are broadly of two types viz Motor or generator.

Both works on the principle of electomagnetic induction.

Generator:- Due to relative motion between magnetic flux
and winding, an emf is induced in it.

Motor: Due to the current flowing through the winding and
magnetic field flux, a force is experienced by the
conductor.

Answer / anjali

DC generator:It works based on the principle of Electro magnetic induction.Whenever there is a relative motion between the conductors and the magnetic field,emf is induced in the conductor.When this circuit is closed current flows in it....

Answer / raja

2 principles
1 is hetropolar
In the case of a hetero-polar generator the
induced emf in a conductor goes through a
cyclic change in voltage as it passes under north and south
pole polarity alternately.

2 is Homo polar
Even though the magnetic poles occur in pairs,
in a homo-polar generator the conductors
are arranged in such a manner that they always move under
one polarity. Either north pole
or south pole could be used for this purpose. Since the
conductor encounters the magnetic
flux of the same polarity every where it is called a homo
polar generator.

Answer / guest

DC machine are both motor/ generator works on
electromagnetic induction principle
MOTOR:
The current carrying conductor placed in magnetic field the
force exist on that conductor.according to Faraday laws of
electromagnetic induction principle.field indicates Flemming
left hand rule

GENERATOR:
When ever a conductor cuts the magnetic field the an EMF
Induced that conductor.according to Faraday laws of
electromagnetic induction principle.field indicates Flemming
Right hand rule

how can we find a burden of potential transformer? what does it effects? how can we calculate rated load of it?

4 Answers   Areva, KPTCL,

---

Single phase and threephase power calculation

0 Answers  

---

Why the suply frequency in INDIA is 50HZ

2 Answers   HCL,

---

11Kv Dog conductor 6/0.186 formula Line Losses ? Length 4.85Km amper ..? 52 Pole Max Load 3200Kw

1 Answers  

---

Define load factor?

0 Answers  

---

---

wat is the current produced in a 5000v megger? when the positive and negetive terminals are touched on our body get s shock?

0 Answers   FLS,

---

We have 420volts, Diesel gen-sets each 750kva 4nos. we are operating with bus bar duct having 10x150mm for each face 4nos. our question is what is the minimum gap required between each face? is there any satutory regulations?

1 Answers   Alliance One,

---

What is meant by Low Resistance Cable and High Resistance Cable.

0 Answers  

---

What do u mean by Line voltage Monitor?Where it is used in a Power system?

2 Answers  

---

What is the difference between expansion joints & thermal expansion joints in Bus bar

1 Answers  

---

how can we calculate air compressure capacity

1 Answers  

---

what is the difference between diode and zener diode?

4 Answers  

---