Procedure –

1. Ensure the complete opened position of delivery valve.
   
2. Measure height of the pressure gauge above the vacuum gauge.
   
3. Switch on the pump.
   
4. Vary the flow rate (discharge) by closing the delivery valve.
   
5. Adjust the delivery valve accordingly the pressure gauge reading of 1 kg/cm².
   
6. Note down vacuum gauges reading.
   
7. Note down time taken for ‘h’ cm rise of oil (10 cm) in collecting tank.
   
8. Note down the time taken for ‘n’ revolutions for energy meter disc (3 rev).
   
9. Repeat the procedure for 1 kg/cm² incremental by closing the delivery valve gradually, (i.e. 1.0, 1.5, 2.0, 2.5 and 3.0 kg/cm²).
   
10. Switch off the power supply after opening the delivery valve completely.
    
    

Formulae –


Graph – Draw graphs of Discharge vs Head, Output Power, Efficiency.