RVIA RV Registered Technician Study
Guide - Section B (2017 DACUM) -
Electrical Systems (27 Questions on
Official Test) (2024/2025) Graded A+
What is the primary function of the RV’s converter?
A) To store electrical energy
✔✔B) To convert 120V AC power to 12V DC power for the RV's electrical system
C) To generate electricity
D) To manage the RV’s battery charging system
Which type of battery is typically used in RVs for deep cycle applications?
✔✔A) Lead-acid battery
B) Alkaline battery
C) Lithium-ion battery
D) NiMH battery
What is the most common voltage supplied by an RV shore power connection?
A) 110V
1
,B) 240V
✔✔C) 120V
D) 220V
Which of the following components is responsible for converting DC power to AC power in an
RV?
✔✔A) Inverter
B) Battery
C) Converter
D) Generator
What does the term "ampacity" refer to in an RV electrical system?
✔✔A) The maximum amount of current a conductor or device can carry safely
B) The amount of energy stored in a battery
C) The total wattage used by the RV’s appliances
D) The capacity of the RV’s air conditioner
How does an RV’s power distribution panel function?
2
,A) It stores electricity for later use
✔✔B) It distributes power to different circuits within the RV
C) It converts AC to DC power
D) It manages the battery charging system
What is the role of a fuse in an RV electrical system?
A) To store electrical energy
✔✔B) To protect electrical circuits from overcurrent by breaking the circuit when necessary
C) To convert DC to AC power
D) To increase the voltage for specific appliances
Which of the following best describes an RV’s ground fault circuit interrupter (GFCI)?
✔✔A) A safety device that cuts off power if it detects an electrical fault or imbalance
B) A system that converts AC to DC power
C) A battery management system
D) A device that amplifies electrical signals
What is the typical operating voltage of an RV’s 12V electrical system?
3
, ✔✔A) 12V DC
B) 120V AC
C) 240V AC
D) 6V DC
How does a transfer switch work in an RV’s electrical system?
✔✔A) It switches between shore power and generator power to the RV
B) It converts AC power to DC power
C) It monitors battery charge levels
D) It manages the power distribution to specific circuits
Which of the following is the most likely cause of an RV’s battery draining quickly?
A) Overcharging the battery
B) Faulty fuses
✔✔C) Leaving appliances or lights on for extended periods
D) Incorrect shore power connection
What does a voltmeter measure in an RV electrical system?
4
Guide - Section B (2017 DACUM) -
Electrical Systems (27 Questions on
Official Test) (2024/2025) Graded A+
What is the primary function of the RV’s converter?
A) To store electrical energy
✔✔B) To convert 120V AC power to 12V DC power for the RV's electrical system
C) To generate electricity
D) To manage the RV’s battery charging system
Which type of battery is typically used in RVs for deep cycle applications?
✔✔A) Lead-acid battery
B) Alkaline battery
C) Lithium-ion battery
D) NiMH battery
What is the most common voltage supplied by an RV shore power connection?
A) 110V
1
,B) 240V
✔✔C) 120V
D) 220V
Which of the following components is responsible for converting DC power to AC power in an
RV?
✔✔A) Inverter
B) Battery
C) Converter
D) Generator
What does the term "ampacity" refer to in an RV electrical system?
✔✔A) The maximum amount of current a conductor or device can carry safely
B) The amount of energy stored in a battery
C) The total wattage used by the RV’s appliances
D) The capacity of the RV’s air conditioner
How does an RV’s power distribution panel function?
2
,A) It stores electricity for later use
✔✔B) It distributes power to different circuits within the RV
C) It converts AC to DC power
D) It manages the battery charging system
What is the role of a fuse in an RV electrical system?
A) To store electrical energy
✔✔B) To protect electrical circuits from overcurrent by breaking the circuit when necessary
C) To convert DC to AC power
D) To increase the voltage for specific appliances
Which of the following best describes an RV’s ground fault circuit interrupter (GFCI)?
✔✔A) A safety device that cuts off power if it detects an electrical fault or imbalance
B) A system that converts AC to DC power
C) A battery management system
D) A device that amplifies electrical signals
What is the typical operating voltage of an RV’s 12V electrical system?
3
, ✔✔A) 12V DC
B) 120V AC
C) 240V AC
D) 6V DC
How does a transfer switch work in an RV’s electrical system?
✔✔A) It switches between shore power and generator power to the RV
B) It converts AC power to DC power
C) It monitors battery charge levels
D) It manages the power distribution to specific circuits
Which of the following is the most likely cause of an RV’s battery draining quickly?
A) Overcharging the battery
B) Faulty fuses
✔✔C) Leaving appliances or lights on for extended periods
D) Incorrect shore power connection
What does a voltmeter measure in an RV electrical system?
4
