Can u explain : what is supply for train (whether a,c or d.c
).I know that supply is 25000v a.c .But there is rumour that
supply is D.C.
And also explain how lights and fans inside the trains are
working ,and what type of motors are used in trains whether
D.C motors or induction motors .If d.c motor, how it gets
supply.If traction motors are used then what are traction
motors and its functions and how it differs from other
motors and also explain about locomotive .
please reply..............
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Answer Posted / sharan dilip
Its good question.
But for a motor the mechanical characteristics (T Vs N) are
concentrated.and even though the if the load increases the
speed would decreases for shunt motor.But in the case of dc
series motor both armature current and field current are
same and at much higher loads also the torque can be maintained.
For dc series motor we operate in such a circumstances such
that at constant torque and variable speed.
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