A string
efficiency of 100% implies that
shunt
capacitance is 1 pF
potential across each disc is same
potential across each disc is zero
one of the
insulator discs is shorted
potential across each disc is same
The 100%
string efficiency is an ideal case for which the voltage across each disc will
be exactly the same hence shunt capacitance is zero.
Hence, the
correct option is (B).
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