7 In a balanced - nnected circuit, the relationship between line voltage and pha

Question

7 In a balanced - nnected circuit, the relationship between line voltage and phase , t voltage is: line voltage and phase voltage are in phase. h line voltage is 180° out of phase with phase voltage. . line voltage is 30 out of phase with the phase voltage. d. line voltage is 120 out of phase with the phase voltage a. b. 8. In a balanced -connected circuit, the phase relationship between line current and phase current is: a. line current and phase current are in phase. b. line current is 180° out of phase with phase current. c. line current is 30° out of phase with the phase current d. line current is 120° out of phase with the phase current 9. In a balanced Y-connected circuit, what is the relationship between line current and phase current? a. line current and phase current are in phase. b. line current is 180° out of phase with phase current. c. line current is 30e out of phase with the phase current d. line current is 120 out of phase with the phase current 10. Three loads each having a resistance of 10 's are connected in wye. The total 3-phase power is 3000 watts. What is the line-to-line voltage of the power supply? 11. Three resistors each having a resistance of 11 's are connected in delta across a 3 440 volt line. a. What is the line current? b. What is the total three-phase power?

Explanation / Answer

7)line voltage and phase voltage are in phase.

8) line current is 30 degrees out of phase with the phase current.

9)line current and phase current are in phase.

10) we know P=[1.732*(line voltage)^2]÷10

3000=[1.732*(line voltage)^2]÷10.

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