Determine the phase current and line current

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Reference no: EM131195473

Problem 1: Three loads, each of resistance 30?, are connected in star to a 400v, 3-phase supply. Determine (A) the system phase voltage (B) the phase current (C) the line current

Problem 2: A star connected load consists of three identical coils each of resistance 30? and inductance 127.3mH. If the line current is 5.08 A, Calculate the line voltage if the supply frequency is 50Hz

Problem 3: Three identical coils each of resistance 30? and inductance 127.3mH are connected in delta to a 400V, 50Hz 3-phase supply determine (A) the phase current and (B) the line current

Problem 4: Three 12? resistors are connected in star to a 400v, 3-phase supply. Determine the total power dissipated by the resistors.

Problem 5: Three identical coils, each of resistance 10? and inductance 42mH are connected (A) in star and (B) in delta to a 400V, 50Hz, 3-phase supply determine in both star and delta :

The phase voltage
The impedance of each load
The line current
The phase current
The power factor and phase angle
The active (real) power
The reactive power
The apparent power

You should draw the power triangle to scale to represent the different quantities.

Reference no: EM131195473

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