Question

3 resistors of value 100 ohms each are connected in delta accross 415 volt , 3 phase supply. calculate 1) line and phase current 2) power taken from the source​

Answer 1

Answer:

For star connection

Phase voltage = V / square root of 3

Vp = 415/1.73 = 240 Volts

Phase current = 240/100 = 2.4 Amp

In star connection phase current is equal to line current = 2.4 Amp

Power consumption = I^2R ×3 = 2.4×2.4×100×3 = 1728 Watt