in this video I will explain you
1. calibration of wattmeter by direct loading
2. calibration of wattmeter by Phantom loading
3. why direct loading is not done with high rating wattmeter
4. how direct loading is different from Phantom loading
5. what is phantom loading
question- water metre is being tested under Phantom loading condition if the wattmeter reading is 60 what the actual power consumed from the supply
question- in Phantom loading arrangement energy consumption in the calibration test of wattmeter is reduced because of
