Question 109Electricity & Electronics - QMED
70% to passIn a three-phase circuit, how far apart are the phase voltages?
A120° apart
B160° apart
C180° apart
D360° apart
AI Explanation
The correct answer is A) 120° apart. In a three-phase circuit, the phase voltages are spaced 120 degrees apart. This is a fundamental principle of three-phase electrical systems, where the three phase voltages are displaced from each other by 120 electrical degrees. This 120-degree phase difference is what allows three-phase systems to provide a more balanced and efficient power distribution compared to single-phase systems. The other options are incorrect because: B) 160° is not the correct phase difference, C) 180° would be for a single-phase system, and D) 360° would represent a full circle, which does not accurately describe the phase relationship in a three-phase circuit.
Related Questions
Q411:What is the purpose of the capacitor within component "5" of the circuit shown i... Q418:As shown in the wiring diagram of the semi-automatic navigation lighting panel c... Q79:What will be the resulting current when a voltage of 442.7 VDC is applied to a r... Q262:What is a bus disconnect link used to isolate? Q165:Which of the meters listed should only be used after a circuit has been electric...
Ready to test your knowledge?
Take a Electricity & Electronics - QMED Practice ExamOfficial Resources