Power Systems
The main advantage of the Decoupled Load Flow (DLF) as compared to the NR method is

All of these
 reduced memory requirements in storing the Jacobian elements
 number of iterations are less
 accuracy is more

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Power Systems
The advantage of hydro electric power station over thermal power station is

 the initial cost of hydro electric power station is low
 hydro electric station can be constructed at the place where the energy is required
 hydro electric power station can supply the power throughout the year
 the operation cost of hydro electric power station is low

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