Power Systems
With reference to hydrometer station, the graphical representation of the discharge as function of time is known as

 Monograph.
  Hydro-graph.
 Load duration curve.
 Hectograph.

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Power Systems
An hydro-graph indicates

 the average run off during the period.
 the discharge at any time during the period under consideration.
 the maximum and minimum run off during the period.
All of these

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