Low and High Voltage Systems Quiz

Explain the functions of a typical Low Voltage and High Voltage electrical distribution system per industry standards.

What is the typical voltage range for Low Voltage (LV) electrical distribution systems?

• 50V to 1,000V AC

• Above 1,000V AC

• 3.3kV to 15kV

• 220V to 440V AC

What are the common voltages in ships for Low Voltage (LV) systems?

• 220V, 440V AC

• 3.3kV, 6.6kV, 11kV AC

• 50V to 1,000V AC

• Above 1,000V AC

What functions do LV systems serve in terms of power distribution?

• Power to lighting circuits and auxiliary systems

• Power to main propulsion motors

• Power to heavy-duty equipment

• Power to renewable energy systems

What is the typical voltage range for High Voltage (HV) electrical distribution systems?

• 50V to 1,000V AC

• Above 1,000V AC, up to 15kV

• 220V to 440V AC

• 3.3kV to 6.6kV

What are the common voltages in ships for High Voltage (HV) systems?

• 220V, 440V AC

• 3.3kV, 6.6kV, 11kV AC

• 50V to 1,000V AC

• Above 1,000V AC

What functions do HV systems serve in terms of power distribution?

• Power to lighting circuits

• Power for main propulsion motors

• Power to non-critical loads

• Power to communication systems

What is the main difference between LV and HV systems in terms of application?

• LV systems are for smaller loads, HV for larger loads

• HV systems are for smaller loads, LV for larger loads

• Both are used for the same applications

• LV systems are only for lighting

What is the role of the IEC (International Electrotechnical Commission)?

• Develops standards for electrical systems

• Provides certification for electrical equipment

• Coordinates ANSI standards

• Oversees electrical safety in the U.S.

What does the NEC (National Electrical Code) ensure?

• Safety in electrical installations

• Compatibility of electrical systems

• Efficiency in power distribution

• Standardization of electrical equipment