Answer Posted / prakash d sdmit, ujire

Generator requires dc
current to energise its
magnetic field, soo
called excitation. And
dis dc current can b
obtained frm a
sepepate source also
v used to call dat as
exciter. Either dis may
b static or rotating.

need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.

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