plz tell me about BACK emf and how it generates?
Answers were Sorted based on User's Feedback
Answer / karthik raman.b
it is generated in armature of DC motor the emf opposes the cause of it
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / ann
For DC machine
when when we energize rotor of the machine .flux is produce this flux is static flux ... when the rotor of the dc machine rotors the flux cuts the stator winding according to Faraday's law a produced emf is produced which cancelled the effect of original emf .the emf is called back emf which oppose the effect of original emf
For ac machines,
both parts of machine are rotating .. when we energize the rotor of synchronous machine with dc supply a rotating emf is induce which cuts the winding of stator in the result back emf induce
| Is This Answer Correct ? | 1 Yes | 0 No |
what is the basic need of domestic loads 1- voltage 2- current
How can we increase the capacity of Energy.?
how to wiring 20 hp motor get completated?
How can we reduce the reactive power consumption of your 12.5 MVA power transformer.
What are the special cables required for explosion proof wiring?
Whta is earthing?What is the optimum value of Earth Pit?
what is the instataneous value of voltage in a 3-phase balanced star connected circuit?
what are upstream faults and downstream faults in power system
what is the abbreviation for F.M In FM-200 fire suppression system
why we take movement of rotor always in counter-clockwise direction in 3-phase induction motors?
How many earthing pits required for diesel generator set ? Why ?
sometime battery charged and then automatically charged when rectifier ON conition, is there any chances please clarify the same.
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)