Electrician's Mate (EM) "A" School Practice Test

These questions are part of the practice quiz. Start practicing

• What is the voltage level of a standard household outlet in the U.S.?
• What happens when the temperature control switch is turned on?
• When is the wash motor brake released?
• What prevents the head from locking in the closed position if an obstruction exists?
• How is the power factor defined?
• What is the role of an arc fault circuit interrupter (AFCI)?
• What does PPE stand for in electrical safety?
• Which of the following is NOT a type of electrical circuit?
• What is the purpose of grounding in electrical systems?
• Which device ensures that no voltage is present at the motor during idle periods?
• Which electrical component is used to store energy in an electric field?
• What is the primary function of a circuit breaker?
• What is the purpose of a transformer?
• What is the standard voltage for most household circuits in the United States?
• Which type of wire is typically used for residential electrical systems?
• Where is the proper landing spot for small craft operations?
• What does the term "electromagnetism" refer to?
• What is the function of an electrical panel?
• What is the difference between alternating current (AC) and direct current (DC)?
• What is illuminated by the contacts once the buck and head contactors are energized?
• What is a multimeter used for?
• What is the ideal insulation type for high-temperature environments?
• Which tool is specifically designed to measure voltage?
• What is a common testing device used to check insulation resistance?
• What is the role of circuit breakers in an electrical system?
• How many watts are the forward and aft headlights?
• What is the significance of a "neutral" wire?
• What is a transformer primarily used for?
• What type of batteries are typically used for starting small crafts?
• What are the three primary components of an electrical circuit?
• What standard must be adhered to for the safe installation of electrical wiring?
• In a three-phase electrical system, what is the phase difference between any two phases?
• What is the primary purpose of the National Electrical Code (NEC)?
• How many times per minute should the strobe light flash?
• Which device is used to measure the current in an electrical circuit?
• What determines the flow of current in a circuit?
• When does a pilot lamp typically illuminate?
• What is the primary role of Personal Protective Equipment (PPE) in electrical work?
• Name the types of electrical circuits.
• What three components are typically found in a washer drive system?
• What is the color of the aft towing light on a vessel?
• What safety device interrupts the power supply to prevent shock?
• What's the function of the safety control bar?
• What type of circuit configuration allows other components to function if one component fails?
• Why is it essential to follow proper labeling protocols in electrical installations?
• Why is it important to use personal protective equipment (PPE) when working on electrical systems?
• What does a multimeter measure?
• What is the main hazard when working with energized electrical equipment?
• What is the primary component of a circuit that provides resistance?
• What is the function of a fuse in an electrical circuit?
• Define the term "fault current."
• What component of a griddle ensures even heat distribution?
• How do you calculate total resistance in a series circuit?
• In the context of aircraft visibility, what does a 360-degree visibility indicate?
• What is your main power system voltage?
• What is the purpose of an aft towing light on a vessel?
• What safety measure is essential before working on electrical circuits?
• What are the main types of electrical drawings an electrician might work with?
• What washer component changes direction every two minutes?
• Where is the speed reducer located in the washing machine?
• What is the function of a transformer in an electrical system?
• What component dampens the impact of the head raising and lowering?
• What safety measure should be followed when working with electrical components?
• Define "insulation resistance."
• What is the impact of temperature on electrical resistance?
• Explain the function of a surge protector.
• What does a megger measure?
• What is a contactor coil used for?
• Why is it essential to perform a voltage test before beginning work on electrical equipment?
• What is the purpose of using fuses in electrical systems?
• Which of the following describes a short circuit?
• In an alternating current (AC) circuit, what happens to the voltage over time?
• What does a green deck status light indicate?
• What is typically included in the electrical distribution system?
• In electrical terminology, what does the term "load" refer to?
• Which lights are used to outline the structure forward of the helicopter?
• Where are the fuses that protect the control circuitry located?
• What does NEC stand for in the context of electrical work?
• What component rotates the basket at 37 revolutions per minute (RPM)?
• What does a circuit breaker do?
• What safety device is used to protect against electrical shock?
• What does NEC stand for in electrical terminology?
• What is a panelboard?
• What is typically the effect of overloading a circuit?
• Which of the following is a key function of an electrician's mate (EM)?
• What is the color code for a neutral wire in 120/240V AC electrical systems in the U.S.?
• What component controls the fuel injection system in small crafts?
• What provides the power to start a small craft?
• What is the unit of measure for electrical power?
• What is the primary hazard associated with overhead power lines?
• What dryer component is provided to change various settings quickly?
• What is the purpose of a junction box?
• In electrical terms, what is "voltage drop"?
• What is the visibility range of your aircraft warning lights?
• What is the preferred method to ensure compliance with safety standards in electrical installations?
• What does the color orange typically indicate in electrical wiring?
• What unit is commonly used to express resistance in electrical circuits?
• What does the term "de-energize" mean?
• What is a common cause for malfunctioning heating elements in cooking equipment?
• In what scenario is it essential to follow the 3-foot rule?
• What type of current is primarily used in homes and businesses?
• What is the primary function of a circuit breaker?
• What equation is used to calculate power in watts?
• What does the term "double insulation" refer to in electrical equipment?
• Explain the concept of "phase" in AC power systems.
• In cases of emergency, what light signals might be most vital in aviation?
• What does GFCI stand for and what is its purpose?
• What is the effect of an electrical imbalance that GFCIs detect?
• What is the purpose of conduit in electrical installations?
• What is used to control the speed with which the laundry press head comes down on the garment?
• What device is essential for detecting gas leaks in electrical applications?
• What is the importance of circuit labeling?
• What does the term "grounding" refer to in electrical systems?
• What component cycles on and off to maintain the desired buck temperature?
• Why do components corrode rapidly on small crafts?
• What is the material that sheaths each heating element to resist corrosion?
• Describe the importance of conductor sizing.
• What is used to attach the heating element to the griddle plate?
• What are the safety precautions when working with live circuits?
• What is the main function of a relay in an electrical system?
• What is stated by Ohm's Law?
• What is one of the primary reasons for using conduit in electrical installations?
• What type of wire is typically used for underground installations?
• What indicates that a griddle's heating element is functioning?
• What does "kVA" stand for in electrical terminology?
• Which component is primarily responsible for interrupting an electrical circuit during a fault?
• In which area are obstructions not permitted according to safety regulations?
• What does Ohm's Law state?
• What activates the bilge pump in a system?
• The JOG switch is a ______ operation?
• What color wire is typically used for ground in 120/240V AC systems in the U.S.?
• Which of the following is a function of a relay in an electrical circuit?
• What might you assess if the visual alarm at the telltale panel activates?
• What are the primary colors of electrical safety warning signs?
• What is the primary function of a voltage regulator?
• When are the pilot lights illuminated?
• What color is the starboard side light?
• Which safety device is specifically designed to protect against ground faults?
• Why is a convection oven preferred over a conventional oven?
• How is the wash cycle initiated in an automatic washer?
• What is a lighting circuit?
• What does the term "three-phase power" refer to?
• What is an electrical schematic diagram?
• How is a circuit breaker reset?
• What is one advantage of using circuit breakers compared to fuses?
• What is the function of a contactor?
• What happens to the air in a convection oven?
• Which type of circuit allows for multiple paths for current flow?
• What is the purpose of proper grounding in electrical systems?
• What is the unit of measure for electrical current?
• Why is it crucial to use the correct wire gauge for electrical installations?
• What is the main purpose of grounding in electrical systems?
• Which device is commonly used to interrupt the flow of electricity in case of danger?
• The main advantage of using a convection oven is:
• What are the safety colors used for indicating caution in electrical work?
• What type of switch is typically used for manual operation of the wash motor?
• At the end of the cycle, the buzzer will be energized to notify the operator that what?
• In electrical wiring, what does the term "derating" mean?
• What unit is used to measure electric current?
• What happens when the wash motor exceeds its rated current?
• What does a phase sequence refer to in a three-phase system?
• What is the primary function of a fuse in an electrical circuit?
• What is the principal use of a relay in electrical systems?
• What is the function of a capacitor in an electrical circuit?
• How can lights and visual landing aids be operated remotely?
• What is the typical use of a transformer in electrical systems?
• Which of the following can affect the battery life of a small craft?
• Where are degaussing charts found?
• Which of the following is the main risk if personal protective equipment is not used in electrical work?
• What happens if a bilge pump fails to operate correctly?
• Describe the role of a capacitor in an electrical system?
• Which device is used to measure voltage in an electrical circuit?
• What does a visual and audible alarm at the telltale panel indicate?
• How does alternating current (AC) differ from direct current (DC)?
• How does a pressure clamp function in attaching components?
• What is the significance of the term "watts" in electrical systems?
• What is a watt-hour (Wh)?
• What is the role of a busbar in an electrical installation?
• What provides the means of connecting and disconnecting main power?
• Which component is responsible for controlling the fuel delivery to the engine?
• What is the purpose of a fuse in an electrical circuit?
• How is electric current measured within a circuit?
• What is the formula for calculating electrical power?
• What component circulates air around the food in a convection oven?
• What is an inverter used for in electrical systems?
• What is the primary purpose of DIP switches in dryer control systems?
• What is the purpose of conduit in electrical installations?
• What will de-energize the entire dryer when the temperature exceeds 205 degrees Fahrenheit?
• What is a GFCI outlet designed to protect against?
• In electrical wiring, what does the color code for ground typically indicate?
• What does the term "short circuit" refer to?
• What is the basic purpose of a lighting contactor?
• What is the key characteristic of a series circuit?
• What is the primary function of an electrical meter?
• What is the purpose of a dimmer switch?
• How frequently should electrical equipment be inspected for safety?
• What type of magnetization does the FI-QI coil counteract?
• When checking the voltage during IVV testing, what is the expected voltage?
• What component notifies the DMP if there is no air flow?
• What are the two types of electrical faults that can occur?
• What is the purpose of a solenoid switch?
• What does the resistance in a circuit determine?
• What does the term "load" refer to in an electrical circuit?
• In a convection oven, the component that helps evenly cook food is:
• How is the bilge pump typically tested?
• What role does a resistor play in an electrical circuit?
• What would be the consequence of a short circuit in an electrical installation?
• What does the term "short circuit" refer to?
• Which type of wire is typically used for residential electrical installations?
• What is the typical frequency of residential AC power in North America?
• In electrical terminology, what does AC stand for?
• What lets the helicopters know if it's safe or unsafe to land or take off?
• What is meant by "voltage drop" in electrical circuits?
• What is the purpose of electrical code regulations?
• What voltage is typically used for a contactor coil?
• What is the purpose of a relay?
• What type of grounding system uses metal rods driven into the earth?
• Which malfunction would NOT be indicated by an alarm at the telltale panel?
• What is one consequence of using an incorrect wire gauge?
• How do you measure the magnetic field of a ship?
• What is the role of a relay in an electrical circuit?
• Which of the following is a common hazard when working with electrical circuits?
• What is a possible consequence of failing to maintain washer components?
• What does it mean if a wire is rated for 600 volts?
• Which device is used to control the flow of electricity in a circuit?
• How many major subsystems are there in an electrical distribution system for small crafts?
• What is the required clearance for electrical panels from the floor?
• What does it mean to "bond" electrical systems?
• What is the maximum coil current for the A coil (in amps)?
• What does the term "ampacity" refer to?
• In electrical safety, why is lockout/tagout critical?
• What role does the clutch play in a washer drive system?
• The starboard and port running lights are how many degrees?
• What is the starter duty cycle for a small craft engine?
• What does a circuit breaker do?
• What is the primary purpose of a grounding system in electrical work?
• What component of the electrical control box prevents the motor from overload?
• Which of the following steps is NOT part of the lockout/tagout procedure?
• What is the purpose of the probe in a griddle?