Answer Posted / arup chakraborty

BUS REACTOR:-(Electricity) An air-core inductor connected
between two buses or two sections of the same bus in order
to limit the effects of voltage transients on either bus.
Reduce fault current.Bus reactors a devise installed in a
bus to maintain system voltage when the load on the bus
changes by releasing reactive power as usable power to
bolster the voltage.
LINE REACTOR:- A line reactor is placed in line at point of
use or just after a transformer to maintain a stable
amperage to the user, capacitor.

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