Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...

what is back emf?

Answer Posted / vishnu gandhi

All windings have self inductance and mutual inductance. So
Lx dI/dt effect produces oppose to current which can be
termed as back emf. In case of Induction Motor the rotor
is short cicuited secondary of transformer which produces
it's own magnetic field and back emf is iduced in primary
winding which depend upon speed of rotor and
current.

Is This Answer Correct ?    3 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

why sielent pole is used only in hydro generators and not in turbo generators

4110


We are preparing another project which involves Waste heat recovery from a 1 MW GE Engine. The Engine in particular gives out flue gas at 487Deg C with a flow rate of 5650 kg/hour and this can be cooled to 180 Deg C. This gives a thermal output of ~ 594 KW that is available for input to VAM via heat exchanger / boiler. Additionally 581 KW will be available from engine jacket water (temperature profile 80/ 80 Deg C and a flow rate of 50m3/hr) Our estimation is that 300 TR of cooling is possible with a suitable VAM machine(s). Please advise what is the most suitable arrangement with maximum TR and min Capital expenditure. plz reply me as early as possible

1931


how can we change the phase angle b/w two phase?

5028


Can any body tell me the different types of LT cables & their application.

2054


Name two types of electrical analogous for mechanical system.

1149


do we use links in a dc circuit?if so what s its use in it?

1967


WHAT CAUSED THRESHOLD VOLTAGE TO EXIST?

3991


how indusrial diesel generator work

1856


What can you contribute to the progress of our Company as an employee if you are selected?

5353


how to set the time in digital timer ?

1969


wat is d diffr btw shunt coil and trip coil in VCB?

2760


Why did lightening arrestor solid copper rod head is sharp on mobile tower top?

1951


What is the control action?

1085


How much kv gas generator is needed to run 2 hp and 1 hp airconditioners, plus a refrigerator and 4 Tvs

5081


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

5212