Why 3 phases?

What is the primary function of an electrical generator?

• Converts electrical energy into mechanical energy.

• Converts mechanical energy into electrical energy.

• Converts chemical energy into electrical energy.

• Converts electrical energy into heat energy.

What does a 60Hz AC power supply indicate?

• The voltage remains constant at 60 volts.

• The current flows in one direction 60 times per second.

• The sine wave of the current repeats 60 times per second.

• The power output is 60 watts.

Why is three-phase power commonly used for generators and electrical equipment?

• It is simpler to install than single-phase power.

• It provides a more constant output power compared to single-phase.

• It requires fewer cables for transmission.

• It allows for higher voltage levels without transformers.

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What happens to the current in the neutral wire of a three-phase system if the current on all phases is perfectly balanced?

• It increases significantly.

• It remains at 0 Amps.

• It fluctuates rapidly.

• It becomes equal to the current in one phase.

Which three-phase configuration is capable of handling unbalanced loads due to the presence of a neutral wire?

• Delta configuration

• Wye configuration

• Series configuration

• Parallel configuration

What does the Root Mean Squared (RMS) voltage value represent in an AC circuit?

• The maximum instantaneous voltage.

• The average of all instantaneous voltage values.

• The DC equivalent voltage that would produce the same heating power.

• The voltage at 0 degrees in the sine wave.

What type of power connection is typically provided to residential properties in North America for most appliances?

• Three-phase, 480V

• Single-phase, 240V for large appliances and 120V for smaller ones

• Three-phase, 208V

• Single-phase, 230V