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What are the starting currents of different motors and also
what are the running currents, and idle currents?
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Answer Posted / dharababu
IN MOTORS THE EQUATION FOR BACK EMF IS GIVEN BY
Eb=V-IR,
SO ARMATURE CURRENT I=V-E/R
AT THE TIME OF STARTING THE STATOR FLUX WHICH PRODUCES BY
SUPPLY,WILL NOT LINK WITH ROTOR AND THERE IS NO BACK EMF
PRODUCES IN ROTOR I.E I=V/R.
AS THE RESISTANCE OF ROTOR WILL BE VERY SMALL , THE
STARTING CURRENT WILL BE VERY HIGH .
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