Answer / manjunatha

the voltage generated due to the raotation of armature is
called back emf and it tries to oppose the terminal voltage.

Answer / alvin

back emf refers to the opposing voltage
induced in a motor when motor is
connected to a supply this is as per faradays
law , whenever a current carrying
conductor cuts magnetic field an emf is
induced in it, and is in opposite direction as
that of applied field...

Answer / jayan

Back emf is regeneration in dc motors

Answer / harekrushna sahoo

`back emf is happen in case of d c motor.it working to
oppose the terminal voltage.

Answer / kapil bahadure

Back emf :-DC motor connected to supply then magnetc flux
produced by armature windings.this magnetic flux oppose to
the supply voltage.its denoted by eb.7 also colled as
counter emf.eb occur in the dc machine.
eb=-V-IaRa.

Answer / srinu

back emf is produced in all motors due to rotation ,motor act as generator and produce emf ,this emf is oppose the applied voltage,this is called back emf,this is directelly propostionl to rpm

what is the principle of the single phase energy meter? and,what is the advantages and disadvantages of single phase energy meter?

0 Answers  

How the neutral earthing is connected in DG alternator

6 Answers  

how to compare with Relay settings for HT&LT panels, RMU panel, and PSS CSS transformer?? 1) Load amps, 2)Tripping time, 3) CT ratio, 4)Cable size 5) Transformer KVA rating 6) transformer full load amps

0 Answers  

What are the applications that use Solid State Drives in your home?

1 Answers   L&T,

What is the difference between acs 550 & acs 850

0 Answers   Madhucon,

why the desirable efficiency for a motor is 60%, but in case of transformer, it is above 90%?

1 Answers  

In electrical cables what is U and U0 refers?

11 Answers  

what is the reactive power what is the use of it in system

0 Answers   L&T,

we are small scale industry in production of rice & rice bran. Pls let me know how to take contract demand for our industry.. (for information we have total 600.hp)

2 Answers  

why core of transformer in square or rectangular why not in circle or ellipse if this what happens

2 Answers  

Is it necessary to install Lighting Arrester on both side side (i.e HT and LT) of Transformer in a transmission substation? if yes Why on both side?

1 Answers  

How do you select a cable size(Cu&Al) for a particular load

10 Answers   Adhunik, BPCL Bharat Petroleum, Hiecon, TATA,