Electrical Quiz Set B

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Electrical Quiz Set B - Quiz

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Questions and Answers
  • 1. 

    A phenomena resulting from the PRESENCE and/or FLOW of ELECTRIC CHARGE.

    • A.

      Current

    • B.

      Voltage

    • C.

      Electricity

    • D.

      Resistance

    Correct Answer
    C. Electricity
    Explanation
    Electricity is the correct answer because it is a phenomena that occurs due to the presence and/or flow of electric charge. It encompasses various aspects such as current, voltage, and resistance, which are all related to the behavior and properties of electric charge.

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  • 2. 

    A fundamental PROPERTY of subatomic particles

    • A.

      Electric Charge

    • B.

      Electrical Power

    • C.

      Electrical Energy

    • D.

      Electrical Engineering

    Correct Answer
    A. Electric Charge
    Explanation
    Electric charge is a fundamental property of subatomic particles. It refers to the physical property of matter that causes it to experience a force when placed in an electromagnetic field. Electric charge can be positive or negative, and like charges repel while opposite charges attract. This property is essential in understanding the behavior of particles and their interactions in the field of physics.

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  • 3. 

    The FLOW of electrons or electric charges in a circuit

    • A.

      Current

    • B.

      Voltage

    • C.

      Electricity

    • D.

      Resistance

    Correct Answer
    A. Current
    Explanation
    Current is the correct answer because it refers to the flow of electrons or electric charges in a circuit. It is the rate at which electric charges pass through a conductor, measured in amperes (A). Current is driven by a voltage source and is influenced by the resistance in the circuit. It is an essential concept in understanding and analyzing electrical circuits and is a fundamental property of electricity.

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  • 4. 

    The OPPOSITION to the flow of electrons in a circuit

    • A.

      Current

    • B.

      Voltage

    • C.

      Electricity

    • D.

      Resistance

    Correct Answer
    D. Resistance
    Explanation
    Resistance is the correct answer because it refers to the opposition to the flow of electrons in a circuit. In simple terms, resistance is the property of a material or component that hinders the flow of electric current. It is measured in ohms and is responsible for reducing the current in a circuit. The higher the resistance, the lower the current flow, and vice versa.

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  • 5. 

    The POTENTIAL difference between two points in a circuit

    • A.

      Current

    • B.

      Voltage

    • C.

      Electricity

    • D.

      Resistance

    Correct Answer
    B. Voltage
    Explanation
    Voltage refers to the potential difference between two points in a circuit. It is a measure of the electric potential energy per unit charge. Voltage is responsible for driving the flow of electric current through a circuit. It is often described as the "push" or "force" that causes electrons to move from one point to another. Without voltage, there would be no flow of electricity in a circuit.

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  • 6. 

    The RATE of doing work; the PRODUCT of VOLTAGE and CURRENT in a circuit

    • A.

      Electric Charge

    • B.

      Electrical Power

    • C.

      Electrical Energy

    • D.

      Electrical Engineering

    Correct Answer
    B. Electrical Power
    Explanation
    Electrical power refers to the rate at which work is done or energy is transferred in an electrical circuit. It is calculated by multiplying the voltage and current in the circuit. This means that the more voltage and current present in a circuit, the higher the electrical power. Therefore, electrical power is the correct answer as it aligns with the given definition.

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  • 7. 

    The CAPACITY to do work

    • A.

      Electric Charge

    • B.

      Electrical Power

    • C.

      Electrical Energy

    • D.

      Electrical Engineering

    Correct Answer
    C. Electrical Energy
    Explanation
    Electrical energy refers to the ability of an electrical system to perform work. It is the capacity of an electrical system to do work by moving electric charges through a circuit. In other words, electrical energy is the energy that is transferred or converted from electrical sources to perform tasks such as lighting, heating, or powering electronic devices. It is an essential concept in electrical engineering as it helps in understanding and designing systems that efficiently convert and utilize electrical energy.

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  • 8. 

    SAFETY is its top PRIORITY

    • A.

      Electric Charge

    • B.

      Electrical Power

    • C.

      Electrical Energy

    • D.

      Electrical Engineering

    Correct Answer
    D. Electrical Engineering
    Explanation
    The correct answer is Electrical Engineering. The phrase "SAFETY is its top PRIORITY" suggests that the subject being referred to is a field or discipline that places a high emphasis on safety. Among the given options, Electrical Engineering is a field that deals with the study and application of electricity, electronics, and electromagnetism, and safety is a crucial aspect of working with electrical systems. Therefore, Electrical Engineering aligns with the idea of safety being a top priority.

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  • 9. 

    Unit is watt (W)

    • A.

      Electric Charge

    • B.

      Electrical Power

    • C.

      Electrical Energy

    • D.

      Electrical Engineering

    Correct Answer
    B. Electrical Power
    Explanation
    The unit watt (W) is commonly used to measure electrical power. Power refers to the rate at which electrical energy is converted or transferred. It quantifies the amount of work done or energy consumed per unit time. In the context of electrical engineering, power is a crucial concept as it helps in understanding the efficiency and capacity of electrical systems and devices. Therefore, the answer "Electrical Power" is appropriate as it directly relates to the given unit of measurement.

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  • 10. 

    Unit is watt-second (Ws); we buy it from MERALCO in kilowatt-hour (kWh).

    • A.

      Electric Charge

    • B.

      Electrical Power

    • C.

      Electrical Energy

    • D.

      Electrical Engineering

    Correct Answer
    C. Electrical Energy
    Explanation
    The given information states that the unit of measurement for the energy we buy from MERALCO is kilowatt-hour (kWh), which is a unit of electrical energy. This suggests that the correct answer is "Electrical Energy".

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  • 11. 

    Are achieved by the use of current transformers and solid-state circuitry that monitors the current and initiates tripping through a flux shunt trip when an overload or short circuit is present.

    • A.

      Electronic rms Trip Breakers

    • B.

      Thermal-Magnetic Breakers

    • C.

      Arc Extinguishers

    • D.

      Earth leakage circuit breakers

    Correct Answer
    A. Electronic rms Trip Breakers
    Explanation
    Electronic rms Trip Breakers are able to achieve tripping in the presence of overload or short circuit conditions by using current transformers and solid-state circuitry. The current transformers monitor the current flowing through the circuit, while the solid-state circuitry detects any abnormalities such as an overload or short circuit. When such a condition is detected, the circuitry initiates tripping through a flux shunt trip mechanism. This mechanism ensures that the breaker trips and interrupts the flow of current in order to protect the circuit and prevent any potential damage or hazards.

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  • 12. 

    Achived through the use of a bimetal heated by the load current. because bimetals are responsive to the heat emitted by the current flow, they allow a long time delay on light overloads, yet they have a fast response on heavier overloads.

    • A.

      Electronic rms Trip Breakers

    • B.

      Thermal-Magnetic Breakers

    • C.

      Arc Extinguishers

    • D.

      Earth leakage circuit breakers

    Correct Answer
    B. Thermal-Magnetic Breakers
    Explanation
    Thermal-magnetic breakers are able to provide protection against both thermal and magnetic overloads. The explanation states that these breakers use a bimetal heated by the load current. Bimetals are responsive to the heat emitted by the current flow, allowing for a long time delay on light overloads. However, they also have a fast response on heavier overloads. This means that thermal-magnetic breakers can effectively protect against a wide range of overloads, making them a suitable choice for various applications.

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  • 13. 

    Its function is to combine, divide, and extinguish the arc drawn between opening breaker contacts.

    • A.

      Electronic rms Trip Breakers

    • B.

      Thermal-Magnetic Breakers

    • C.

      Arc Extinguishers

    • D.

      Earth leakage circuit breakers

    Correct Answer
    C. Arc Extinguishers
    Explanation
    Arc extinguishers are devices that are used to extinguish the arc that is formed between the opening contacts of a circuit breaker. When a circuit breaker is opened, an arc is created due to the interruption of the electrical current. This arc can be dangerous and can cause damage to the contacts and surrounding equipment. Arc extinguishers work by using various techniques such as cooling, magnetic blowout, or deionization to quickly extinguish the arc and prevent any further damage.

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  • 14. 

    It consists of specially shaped steel grids isolated from each other and supported by an insulating housing.

    • A.

      Electronic rms Trip Breakers

    • B.

      Thermal-Magnetic Breakers

    • C.

      Arc Extinguishers

    • D.

      Earth leakage circuit breakers

    Correct Answer
    C. Arc Extinguishers
    Explanation
    The correct answer is "Arc Extinguishers". Arc extinguishers are devices used in circuit breakers to extinguish or suppress an electric arc that occurs when a circuit breaker interrupts a high current. They consist of specially shaped steel grids isolated from each other and supported by an insulating housing. These grids help to redirect and cool the arc, preventing it from re-igniting and causing damage to the circuit breaker or surrounding equipment.

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  • 15. 

    Offers ground fault protection and improved ground fault coordination capability.

    • A.

      Electronic rms Trip Breakers

    • B.

      Thermal-Magnetic Breakers

    • C.

      Arc Extinguishers

    • D.

      Earth leakage circuit breakers

    Correct Answer
    D. Earth leakage circuit breakers
    Explanation
    Earth leakage circuit breakers offer ground fault protection and improved ground fault coordination capability. These breakers are designed to detect small leakage currents that occur when there is a fault in the electrical system, such as when a person accidentally touches a live wire. The breaker quickly detects the leakage current and trips to interrupt the circuit, preventing electric shock or fire hazards. Additionally, earth leakage circuit breakers have the ability to coordinate with other protective devices in the system, ensuring that the fault is isolated and cleared without affecting the rest of the circuit.

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  • 16. 

    A large single panel, frame or assembly of panels consisting of switches, overcurrent and other protective devices, busbars and usually metering instruments.

    • A.

      Panelboard

    • B.

      Circuit breaker

    • C.

      Fuse

    • D.

      Switchboard

    Correct Answer
    D. Switchboard
    Explanation
    A switchboard is a large single panel or assembly of panels that includes switches, protective devices, busbars, and metering instruments. It is used to control and distribute electricity in a building or facility. Unlike a panelboard, which is a smaller unit that houses circuit breakers or fuses, a switchboard is larger and more comprehensive in its functionality. It is a centralized control system that allows for the management and protection of electrical circuits.

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  • 17. 

    It is a device intended to provide protection from the effects of arc faults by recognizing characteristics unique to arcing and by functioning to de-energize the circuit when an arc fault is detected.

    • A.

      Electronic rms Trip Breakers

    • B.

      AFCI Circuit Breakers

    • C.

      Arc Extinguishers

    • D.

      Earth leakage circuit breakers

    Correct Answer
    B. AFCI Circuit Breakers
    Explanation
    AFCI Circuit Breakers are devices designed to protect against the effects of arc faults. They are able to recognize the unique characteristics of arcing and are programmed to de-energize the circuit when an arc fault is detected. This helps prevent fires and electrical hazards caused by arc faults.

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  • 18. 

    A single panel or group of panel units assembled in the form of a single panel consisting of busbars, automatic overcurrent devices, and switches for the control of light, heat, motor or power circuits. It is designed to be placed in a cabinet or cutout box installed in or against a wall or partition and is accessible only from the front.

    • A.

      Panelboard

    • B.

      Lighting and Appliance Panelboard

    • C.

      Power Panels

    • D.

      Switchboard

    Correct Answer
    A. Panelboard
    Explanation
    A panelboard is a unit containing busbars, automatic overcurrent devices, and switches that is designed to control various circuits such as light, heat, motor, or power circuits. It is assembled in the form of a single panel or a group of panel units and is typically placed in a cabinet or cutout box installed in or against a wall or partition. The panelboard is accessible only from the front, making it easy to operate and maintain.

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  • 19. 

    Switching device capable of making, carrying and breaking currents under normal condition, making currents at specified time, and/or breaking currents under specified abnormal circuit conditions, such as short circuits.

    • A.

      Generator

    • B.

      Circuit breaker

    • C.

      Transformer

    • D.

      Switchboard

    Correct Answer
    B. Circuit breaker
    Explanation
    A circuit breaker is a switching device that is capable of making, carrying, and breaking currents under normal conditions. It can also make currents at specified times and break currents under specified abnormal circuit conditions, such as short circuits.

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  • 20. 

    An overcurrent protective device with circuit-opening fusible member, which is heated and severed by passage of overcurrent through it.

    • A.

      Panelboard

    • B.

      Circuit breaker

    • C.

      Fuse

    • D.

      Switchboard

    Correct Answer
    C. Fuse
    Explanation
    A fuse is an overcurrent protective device that contains a circuit-opening fusible member. When an overcurrent passes through the fuse, the fusible member heats up and ultimately gets severed, opening the circuit and protecting the electrical system from damage. Fuses are commonly used in electrical systems to prevent excessive current flow and safeguard against short circuits or overloads.

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  • 21. 

    A panelboard where more than 10% of its branch-circuit breakers or fuses are rated 30 amperes or less and with provisions for neutral connections and contains no more than 42 overcurrent devices.

    • A.

      Panelboard

    • B.

      Lighting and Appliance Panelboard

    • C.

      Power Panels

    • D.

      Switchboard

    Correct Answer
    B. Lighting and Appliance Panelboard
    Explanation
    A lighting and appliance panelboard is the correct answer because it is a type of panelboard that meets the given criteria. It is designed for residential or small commercial applications where there is a need for branch-circuit breakers or fuses rated 30 amperes or less, provisions for neutral connections, and a maximum of 42 overcurrent devices. This type of panelboard is specifically intended for lighting and appliance circuits, making it the most suitable option among the given choices.

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  • 22. 

    A panelboard which has no limits on the number of overcurrent devices.

    • A.

      Panelboard

    • B.

      Lighting and Appliance Panelboard

    • C.

      Power Panels

    • D.

      Switchboard

    Correct Answer
    C. Power Panels
    Explanation
    Power panels are a type of panelboard that do not have any limits on the number of overcurrent devices that can be installed. This means that power panels can accommodate a larger number of circuits and overcurrent protection devices compared to other types of panelboards. This flexibility makes power panels suitable for applications that require a higher number of circuits, such as industrial or commercial settings where there is a greater demand for electrical power.

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  • 23. 

    Are used to transfer the load or source of power from one point to another. It is often used in connection with standby or emergency power supplies.

    • A.

      Isolating (Disconnecting Switch)

    • B.

      Branch Circuit Conductor

    • C.

      Transfer Switch

    • D.

      Switchboard

    Correct Answer
    C. Transfer Switch
    Explanation
    A transfer switch is used to transfer the load or source of power from one point to another. It is commonly used in connection with standby or emergency power supplies. This switch allows for a smooth transition between the main power source and the backup power source, ensuring uninterrupted power supply during power outages or maintenance work.

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  • 24. 

    Form of general-use switch for isolating an electric circuit from the source of power

    • A.

      Isolating (Disconnecting Switch)

    • B.

      Branch Circuit Conductor

    • C.

      Transfer Switch

    • D.

      Switchboard

    Correct Answer
    A. Isolating (Disconnecting Switch)
    Explanation
    An isolating (disconnecting) switch is a form of general-use switch that is used to disconnect an electric circuit from the source of power. It provides a means to isolate the circuit for maintenance or repair purposes, ensuring the safety of the personnel working on the circuit. This switch allows the circuit to be completely de-energized, preventing any electrical flow and eliminating the risk of electric shock. It is commonly used in residential, commercial, and industrial settings to safely isolate circuits and prevent accidents.

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  • 25. 

    It is a device that transfers electric energy from one circuit to another. It is frequently used, in electric power distribution, to step-up or step down the voltage and/or isolate one electric circuit to another.

    • A.

      Generator

    • B.

      Circuit breaker

    • C.

      Transformer

    • D.

      Switchboard

    Correct Answer
    C. Transformer
    Explanation
    A transformer is a device that transfers electric energy from one circuit to another. It is commonly used in electric power distribution to either increase (step-up) or decrease (step-down) the voltage. Additionally, transformers are used to isolate one electric circuit from another.

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  • 26. 

    The term "UPS" means

    • A.

      Uninterruptible Power System

    • B.

      Uninterruptible Power Storage

    • C.

      Uninterruptible Power Supply

    • D.

      Uninterruptible Parallel Supply

    Correct Answer
    C. Uninterruptible Power Supply
    Explanation
    The term "UPS" stands for Uninterruptible Power Supply. This device is used to provide backup power to electronic devices in case of a power outage or voltage fluctuation. It ensures uninterrupted power supply by instantly switching to battery power when the main power source fails. This helps to prevent data loss, equipment damage, and downtime in critical systems.

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  • 27. 

    Provides basic power at midrange prices. In addition to protection against power failures, power sags and power surges, it also protects against brownouts and electrical line noise.

    • A.

      Line-Interactive UPS

    • B.

      On-line or “Double Conversion”UPS

    • C.

      Static Type

    • D.

      Standby or “off-line”

    Correct Answer
    A. Line-Interactive UPS
    Explanation
    A Line-Interactive UPS provides basic power at midrange prices and offers protection against power failures, power sags, power surges, brownouts, and electrical line noise. Unlike an on-line or "Double Conversion" UPS, which continuously converts AC power to DC power and then back to AC power, a Line-Interactive UPS uses a built-in transformer to regulate voltage and provide battery backup when needed. It is a cost-effective option for protecting sensitive electronic equipment from power disturbances.

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  • 28. 

    Is used as a low price solution for power failures, power sags and power surges. Utility power is provided during normal operation and passed through the equipment without being regulated by the UPS.

    • A.

      Line-Interactive UPS

    • B.

      On-line or “Double Conversion”UPS

    • C.

      Static Type

    • D.

      Standby or “off-line”

    Correct Answer
    D. Standby or “off-line”
    Explanation
    A standby or "off-line" UPS is used as a low price solution for power failures, power sags, and power surges. It provides utility power during normal operation and passes it through the equipment without being regulated by the UPS. This means that the UPS is not actively regulating the power supply but only kicks in when there is a power failure or disturbance. It is a cost-effective option for protecting equipment against power interruptions but may not provide as continuous and reliable power as other types of UPS systems.

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  • 29. 

    It is designed to provide complete power protection against all nine of the common power problems and use an inverter to create 100% new, clean regulated ac power for your systems.

    • A.

      Line-Interactive UPS

    • B.

      On-line or “Double Conversion”UPS

    • C.

      Static Type

    • D.

      Standby or “off-line”

    Correct Answer
    B. On-line or “Double Conversion”UPS
    Explanation
    The correct answer is "On-line or 'Double Conversion' UPS". This type of UPS is designed to provide complete power protection against all nine common power problems. It uses an inverter to create 100% new, clean regulated AC power for your systems. Unlike other types of UPS, the on-line or double conversion UPS continuously converts incoming AC power to DC power and then back to AC power, ensuring a constant and reliable power supply to connected devices. This makes it ideal for critical systems that require uninterrupted power, such as data centers or medical facilities.

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  • 30. 

    Two primary components of a Generator

    • A.

      Steam turbine and deisel engine

    • B.

      Prime mover and alternator

    • C.

      Rotor and alternator

    • D.

      Engine governor and voltage regulator

    Correct Answer
    B. Prime mover and alternator
    Explanation
    The two primary components of a generator are the prime mover and the alternator. The prime mover is responsible for providing mechanical energy to drive the generator, while the alternator converts this mechanical energy into electrical energy. The prime mover can be a steam turbine or a diesel engine, depending on the type of generator. The alternator consists of a rotor and stator, with the rotor rotating within the stator to generate an electromagnetic field that induces electrical current in the stator windings.

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  • 31. 

    A device that, when interrupting currents in its current-limiting range, reduces the current flowing in the faulted circuit to a magnitude substantially less than that obtainable in the same circuit if the device were replaced with a solid conductor tor having comparable impedance.

    • A.

      Plug Fuse

    • B.

      Fixed-Trip Circuit Breakers

    • C.

      Fuse

    • D.

      Current-Limiting Overcurrent Protective Device

    Correct Answer
    D. Current-Limiting Overcurrent Protective Device
    Explanation
    A current-limiting overcurrent protective device is a device that can interrupt currents within its current-limiting range. When a fault occurs in the circuit, this device reduces the current flowing through the faulted circuit to a much lower magnitude than what would flow if a solid conductor or a device with comparable impedance were used instead. This helps to protect the circuit and prevent damage from excessive current.

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  • 32. 

    A manually operated device used in conjunction with a transfer switch to provide a means of directly connecting load conductors to a power source and of disconnecting thetransfer switch.

    • A.

      Switch, Motor-Circuit.

    • B.

      Switch, General-Use Snap

    • C.

      Switch, Bypass Isolation

    • D.

      Switch, Isolating

    Correct Answer
    C. Switch, Bypass Isolation
    Explanation
    A switch, bypass isolation, is a manually operated device that is used with a transfer switch. It allows for the direct connection of load conductors to a power source and also provides the ability to disconnect the transfer switch. This type of switch is specifically designed for bypassing the transfer switch during maintenance or repairs, ensuring uninterrupted power supply to the load.

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  • 33. 

    Constructed or protected so that exposure to the weather will not interfere with successful operation.

    • A.

      Rainproof

    • B.

      Raintight

    • C.

      Watertight

    • D.

      Weatherproof

    Correct Answer
    D. Weatherproof
    Explanation
    Weatherproof means that something is constructed or protected in a way that it can withstand exposure to various weather conditions without being affected or damaged. It implies that the item will continue to function properly regardless of rain, wind, sun, or other weather elements. This term is commonly used for outdoor electronics, buildings, clothing, and other objects that need to withstand the elements.

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  • 34. 

    Constructed or protected so that exposure to a beatingrain will not result in the entrance of water under specified testconditions.

    • A.

      Rainproof

    • B.

      Raintight

    • C.

      Watertight

    • D.

      Weatherproof

    Correct Answer
    B. Raintight
    Explanation
    Raintight means that something is constructed or protected in a way that it will not allow water to enter when exposed to a beating rain. This term specifically refers to protection against rain and ensures that no water will enter the object or area, even under specified test conditions.

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  • 35. 

    A generic term for a group of nonflammable synthetic chlorinated hydrocarbons used as electrical insulating media.

    • A.

      Askarel

    • B.

      Polybuthelene

    • C.

      Asbestos

    • D.

      PVC

    Correct Answer
    A. Askarel
    Explanation
    Askarel is a generic term used to describe a group of nonflammable synthetic chlorinated hydrocarbons that are commonly used as electrical insulating media. These substances have excellent dielectric properties, making them suitable for use in electrical equipment and transformers. They are nonflammable, which means they do not easily catch fire, making them safe for use in electrical applications. Askarel is a commonly used term in the electrical industry to refer to this group of synthetic chlorinated hydrocarbons.

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  • 36. 

    All circuit conductors between the service equipment, the source of a separately derived system, or other power supply source and the final branch-circuit overcurrent device.

    • A.

      Feeder

    • B.

      Controller

    • C.

      Raceway

    • D.

      Receptacle

    Correct Answer
    A. Feeder
    Explanation
    Feeder refers to all circuit conductors between the service equipment, the source of a separately derived system, or other power supply source, and the final branch-circuit overcurrent device. In other words, it is the set of conductors that transmit electrical power from the main distribution panel to subsidiary distribution panels or to other devices such as motors or equipment. The feeder is responsible for distributing power to various circuits within a building or facility, and it is distinct from the branch circuit that delivers power to individual outlets or devices.

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  • 37. 

    A device or group of devices that serves to govern, in some predetermined manner, the electric power delivered to the apparatus to which it is connected.

    • A.

      Controller

    • B.

      Feeder

    • C.

      Raceway

    • D.

      Receptacle

    Correct Answer
    A. Controller
    Explanation
    A controller is a device or group of devices that regulates the electric power delivered to the connected apparatus. It governs the power in a predetermined manner, ensuring that the apparatus receives the appropriate amount of electricity. This could involve adjusting voltage, current, or other electrical parameters to maintain optimal performance and protect the apparatus from damage.

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  • 38. 

    A contact device installed at the outlet for the connection of an attachment plug

    • A.

      Controller

    • B.

      Raceway

    • C.

      Feeder

    • D.

      Receptacle

    Correct Answer
    D. Receptacle
    Explanation
    A receptacle is a contact device installed at the outlet for the connection of an attachment plug. It is a device that allows electrical equipment to be connected to a power supply. It typically consists of one or more sockets where plugs can be inserted. The receptacle provides a safe and convenient way to connect and disconnect electrical devices, allowing for easy access to power sources.

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  • 39. 

    An enclosed channel of metal or nonmetallic materials designed expressly for holding wires, cables, or busbars, with additional functions as permitted in this Code.

    • A.

      Controller

    • B.

      Raceway

    • C.

      Feeder

    • D.

      Receptacle

    Correct Answer
    B. Raceway
    Explanation
    A raceway is an enclosed channel made of metal or nonmetallic materials that is specifically designed to hold wires, cables, or busbars. It is a component that is used in electrical installations to protect and organize the wiring system. The raceway provides a safe and secure pathway for the electrical conductors, preventing them from being damaged or exposed to external elements. It also allows for easy installation, maintenance, and modification of the electrical system. In addition to its primary function, a raceway may also have additional permitted functions as specified in the electrical code.

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  • 40. 

    Any electric circuit that controls any other circuit through a relay or an equivalent device.

    • A.

      Remote Control Circuit

    • B.

      Ground-Fault Circuit Interrupter (GFCI)

    • C.

      Branch Circuit

    • D.

      Switch, Motor-Circuit

    Correct Answer
    A. Remote Control Circuit
    Explanation
    A remote control circuit is an electric circuit that controls another circuit through a relay or an equivalent device. This type of circuit allows the user to operate a device or system from a distance, without direct physical contact. It typically involves the use of a transmitter and a receiver, where the transmitter sends signals to the receiver to activate or deactivate the controlled circuit. This technology is commonly used in various applications such as television remote controls, garage door openers, and remote-controlled toys.

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  • 41. 

    Device intended for the protection of personnel that functions to de-energize a circuit orportion thereof within an established period of time when a current to ground exceeds the values established for a Class A device.

    • A.

      Switch, Motor-Circuit

    • B.

      Remote Control Circuit

    • C.

      Branch Circuit

    • D.

      Ground-Fault Circuit Interrupter (GFCI)

    Correct Answer
    D. Ground-Fault Circuit Interrupter (GFCI)
    Explanation
    A Ground-Fault Circuit Interrupter (GFCI) is a device that is designed to protect personnel from electric shocks. It works by quickly de-energizing a circuit or a portion of it when a current to ground exceeds the values established for a Class A device. This means that if there is a ground fault, where electricity is flowing through an unintended path, the GFCI will detect the imbalance and shut off the power to prevent potential harm to people. Therefore, the GFCI is the correct answer in this case.

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  • 42. 

    To facilitate pulling

    • A.

      UTILITY BOX

    • B.

      CUT OUT BOX

    • C.

      PULL BOX

    • D.

      OUTLET BOX

    Correct Answer
    C. PULL BOX
    Explanation
    A "pull box" is a type of electrical box that is specifically designed to facilitate the pulling of wires or cables through it. It typically has a larger size and a removable cover, allowing easy access for pulling and routing wires. This type of box is commonly used in electrical installations where multiple wires or cables need to be pulled through long distances or complex pathways. The term "pull box" refers to its main function of making the wire pulling process more efficient and convenient.

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  • 43. 

    Metal box with hinge & enclosure. House or fuse box

    • A.

      CUT OUT BOX

    • B.

      UTILITY BOX

    • C.

      PULL BOX

    • D.

      OUTLET BOX

    Correct Answer
    A. CUT OUT BOX
    Explanation
    A cut out box is a type of metal box with a hinge and enclosure that is commonly used in electrical installations. It is designed to provide a secure and protective housing for electrical components such as switches, circuit breakers, or fuses. The hinge allows for easy access to the interior of the box, while the enclosure ensures that the electrical components are safely contained. This type of box is often used in residential or commercial buildings to house fuse boxes or electrical panels.

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  • 44. 

    For lighting outlet and convenience outlet

    • A.

      CUT OUT BOX

    • B.

      UTILITY BOX

    • C.

      PULL BOX

    • D.

      OUTLET BOX

    Correct Answer
    B. UTILITY BOX
    Explanation
    A utility box is the correct answer because it is commonly used for both lighting outlets and convenience outlets. Utility boxes are electrical enclosures that are installed in walls or ceilings to house electrical connections and devices. They provide a safe and secure housing for electrical wiring and outlets, making them suitable for both lighting and convenience outlets. Cut out boxes, pull boxes, and outlet boxes are also types of electrical enclosures, but they may not be specifically designed for both lighting and convenience outlets.

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  • 45. 

    Where cable ends

    • A.

      CUT OUT BOX

    • B.

      UTILITY BOX

    • C.

      PULL BOX

    • D.

      OUTLET BOX

    Correct Answer
    D. OUTLET BOX
    Explanation
    The correct answer is OUTLET BOX. An outlet box is a device used to house electrical outlets and provide a safe and secure enclosure for electrical connections. It is typically installed in walls or ceilings and is designed to protect the wiring and connections from damage. The other options, such as cut out box, utility box, and pull box, may also be used in electrical installations, but they serve different purposes and are not specifically designed for housing outlets.

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  • 46. 

    The SI unit equal to one joule per second or to the power represented by a current of one ampere flowing across a potential difference of one volt.

    • A.

      Couloumb

    • B.

      Wattage

    • C.

      Watt

    • D.

      Electromotive Force

    Correct Answer
    C. Watt
    Explanation
    The correct answer is Watt. The watt is the SI unit for power, which is equal to one joule per second. It is also equivalent to the power represented by a current of one ampere flowing across a potential difference of one volt.

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  • 47. 

    The SI unit of electric charge equal to the quantity of electricity transferred along the conductor by a current of one ampere in one second.

    • A.

      Couloumb

    • B.

      Wattage

    • C.

      Watt

    • D.

      Electromotive Force

    Correct Answer
    A. Couloumb
    Explanation
    The SI unit of electric charge is the coulomb. It is defined as the quantity of electricity transferred along a conductor when a current of one ampere flows through it for one second. The coulomb is a fundamental unit in electromagnetism and is used to measure the amount of electric charge in a system. It is named after the French physicist Charles-Augustin de Coulomb, who made significant contributions to the study of electromagnetism.

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  • 48. 

    An amount of power especially the power required to operate an electrical device or appliance.

    • A.

      Wattage

    • B.

      Couloumb

    • C.

      Watt

    • D.

      Electromotive Force

    Correct Answer
    A. Wattage
    Explanation
    Wattage is the correct answer because it refers to the amount of power required to operate an electrical device or appliance. It is a unit of measurement for power, specifically the rate at which energy is consumed or produced. Wattage is commonly used to determine the power capacity of electrical devices and is essential for understanding the amount of power needed for efficient operation.

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  • 49. 

    The energy per unit charge available for conversion from a chemical, mechanical or other form of energy into electrical energy or vice versa in a conversion devise as a battery, generator or a motor.

    • A.

      Wattage

    • B.

      Couloumb

    • C.

      Watt

    • D.

      Electromotive Force

    Correct Answer
    D. Electromotive Force
    Explanation
    Electromotive force (EMF) refers to the energy per unit charge available for conversion from one form of energy to electrical energy or vice versa in a conversion device such as a battery, generator, or motor. It is a measure of the potential difference or voltage produced by a source of electrical energy. EMF is responsible for driving the flow of electric current in a circuit and is measured in volts (V).

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  • 50. 

    A non metallic conducting medium in which current is carried by the movement of ions.

    • A.

      ELECTRODE

    • B.

      ANODE

    • C.

      ELECTROLYTE

    • D.

      CATHODE

    Correct Answer
    C. ELECTROLYTE
    Explanation
    An electrolyte is a non-metallic conducting medium in which current is carried by the movement of ions. It is a substance that dissociates into ions when dissolved in a solvent, such as water. The movement of these ions allows for the flow of electric current. Electrolytes are commonly used in batteries, fuel cells, and various electrochemical processes. Examples of electrolytes include saltwater, acids, and bases.

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Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 10, 2015
    Quiz Created by
    Saklay_bamboo
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