Ship's Main Switchboard Quiz

What do transformers do?

• Protect against overloads

• Control the operation of the switchboard

• Step up or step down voltage

• Measure the frequency

What do voltmeters measure?

• Frequency of power supply

• Voltage of electrical circuits

• Power consumed by circuits

• Current flowing through circuits

What do ammeters measure?

• Frequency

• Power

• Current

• Voltage

What is the purpose of wattmeters?

• To measure the frequency

• To control the flow of current

• To measure the power consumed

• To step up voltage

What do frequency meters measure?

• Voltage levels

• Power consumed

• Current levels

• Frequency of power supply

What is a wall-mounted switchboard?

• Stands independently

• Mounted on a wall or partition

• A switchboard for emergencies

• Installed on the floor

What is a general-purpose switchboard?

• Provides backup power

• Used for various applications

• Designed for specific purposes

• Operates at high voltage levels

What is an emergency switchboard?

• Provides power during main power failure

• Used for navigation

• Operates at low voltage levels

• A versatile switchboard

What voltage does a low-voltage switchboard operate at?

• Above 33,000 volts

• Below 1000 volts

• Between 1000 and 33,000 volts

• At any voltage level

What is the main function of a ship's main switchboard?

• To distribute power throughout the vessel

• To measure energy usage

• To isolate equipment for maintenance

• To provide alarms and indicators