In DC motor,the field MMF is given by NI.N-no.of field
winding turns,I-excitation and both are constant.Then how
could the main flux decreases due to armature reaction.
sir,
please send me the last three years exam papers conducted
by BHEL- RECRUITMENT EXAM FOR SUPERVISOR TRAINEE FOR
MECHANICAL ENGINEERING. A Soon as possible. i would be
greatfull to u