Three-Phase Systems in Power Applications Online Test – Multiple Choice Questions and Answers

1. In a certain Y-Y system, the source phase currents each have a magnitude of 9 A. The magnitude of each load current for a balanced load condition is

 
 
 
 

2. In a Y-connected circuit, between each line voltage and the nearest phase voltage, there is a phase angle of

 
 
 
 

3. Polyphase generators produce simultaneous multiple sinusoidal voltages that are separated by

 
 
 
 

4. In a three-phase system, when the loads are perfectly balanced, the neutral current is

 
 
 
 

5. In a certain three-wire Y-connected generator, the phase voltages are 2 kV. The magnitudes of the line voltages are

 
 
 
 

6. In a Y-Y source/load configuration, the

 
 
 
 

7. A constant load power means a uniform conversion of

 
 
 
 

8. In a Y-connected circuit, the magnitude of each line current is

 
 
 
 

9. If in a Y-connected ac generator, each phase voltage has a magnitude of 90 VRMS, what is the magnitude of each line voltage?

 
 
 
 

10. In a three-phase system, the voltages are separated by

 
 
 
 

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