With respect
to DC transmission system select the INCORRECT statement.
The DC
voltage cannot be stepped up with zero spikes for transmission of power at high
voltages.
It requires
only two conductors as compared to three for AC transmission.
Electric
power can be generated at high voltage without any commutation problems
There is no
inductance, phase displacement and surge problems in DC transmission
Electric
power can be generated at high voltage without any commutation problems
In DC
transmission system :
Advantage :
1. Only two
conductor required.
2. Absence of
inductance capacitance and phase displacement.
3. No skin
effect.
4. No
stability problem.
5. A dc line
has less corona loss and reduced
interference with communication circuit.
Disadvantage
:
1. Generating
of power at high DC voltages is difficult due to communication problems and
cannot be usefully utilized consumer ends.
2. Step up or
step down transformation of dc voltages is not possible in equipment line
transformer.
Hence, the
correct option is (C).
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