Hybrid Book - Chapter 9

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Hybrid Book - Chapter 9 - Quiz


Questions and Answers
  • 1. 

    A DC-DC converter replaces the ___ of a traditional vehicle design.

    • A.

      Cranking motor

    • B.

      Voltage regulator

    • C.

      Generator/alternator

    • D.

      Accessory power inverter

    Correct Answer
    C. Generator/alternator
    Explanation
    A DC-DC converter replaces the generator/alternator of a traditional vehicle design. This converter is responsible for converting the direct current (DC) produced by the vehicle's battery into the alternating current (AC) needed to power the various electrical systems and components of the vehicle. By replacing the generator/alternator, the DC-DC converter allows for more efficient power conversion and distribution within the vehicle's electrical system.

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  • 2. 

    The Honda Civic Hybrid DC-DC converter is located near the ___.

    • A.

      Battery pack

    • B.

      Engine

    • C.

      Electric machine

    • D.

      12 V battery

    Correct Answer
    A. Battery pack
    Explanation
    The Honda Civic Hybrid DC-DC converter is located near the battery pack. This is because the DC-DC converter is responsible for converting the high-voltage DC power from the battery pack into the lower-voltage DC power needed to charge the 12V battery and power the vehicle's electrical system. Therefore, it makes sense for the converter to be located near the battery pack for efficient power conversion and distribution.

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  • 3. 

    A buck converter uses ___ diodes.

    • A.

      2

    • B.

      4

    • C.

      6

    • D.

      8

    Correct Answer
    A. 2
    Explanation
    A buck converter uses two diodes. Diodes are used in a buck converter to control the flow of current and voltage. In a buck converter, one diode is used to block the flow of current from the input source to the output load, while the other diode is used to allow the flow of current from the output load to the input source. This allows the buck converter to step down the voltage and regulate the output power. Therefore, the correct answer is 2.

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  • 4. 

    The power input provided to a DC-DC converter comes from the ___.

    • A.

      Power inverter transistor

    • B.

      High-voltage bus

    • C.

      12 V battery

    • D.

      Diodes

    Correct Answer
    B. High-voltage bus
    Explanation
    The power input provided to a DC-DC converter comes from the high-voltage bus. The high-voltage bus is a source of electrical power that supplies the converter with the necessary voltage to convert and regulate the power output. It is commonly used in electrical systems to distribute power efficiently and effectively.

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  • 5. 

    The DC-DC converter of the Toyota Prius is located in the ___.

    • A.

      Battery pack

    • B.

      Transmission

    • C.

      Transaxle

    • D.

      Power inverter

    Correct Answer
    D. Power inverter
    Explanation
    The power inverter of the Toyota Prius is responsible for converting the DC power from the battery pack into AC power, which is used to power the electric motor. This component is typically located near the battery pack, as it needs to be in close proximity to efficiently convert the power. Therefore, the correct answer is power inverter.

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  • 6. 

    The DC-DC converter of the Ford Escape is located in the ___.

    • A.

      Transmission

    • B.

      Underhood/engine compartment

    • C.

      Power inverter

    • D.

      Battery pack

    Correct Answer
    B. Underhood/engine compartment
    Explanation
    The DC-DC converter of the Ford Escape is located in the underhood/engine compartment. This is the area of the vehicle where the engine and other important components are located. Placing the DC-DC converter in this compartment allows for easy access and efficient cooling of the converter, as the engine compartment is well-ventilated. Additionally, locating the converter here ensures that it is close to the battery and other electrical components, minimizing power loss and maximizing efficiency in the conversion process.

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  • 7. 

    A ___ DC-DC converter steps down, or reduces, high voltage to low voltage.

    • A.

      Buck

    • B.

      Boost

    • C.

      Reactive

    • D.

      Doubler

    Correct Answer
    A. Buck
    Explanation
    A buck DC-DC converter is commonly used to step down high voltage to low voltage. It efficiently converts a higher input voltage to a lower output voltage by controlling the duty cycle of a switching transistor. This type of converter is widely used in various applications, such as power supplies, battery charging, and voltage regulation. It is an essential component in many electronic devices that require a lower voltage level for proper operation.

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  • 8. 

    The common components of a filter circuit included the ___.

    • A.

      Battery pack and inductors

    • B.

      Choke and capacitor

    • C.

      Inductors and diodes

    • D.

      Transistors and capacitors

    Correct Answer
    B. Choke and capacitor
    Explanation
    A filter circuit is used to remove unwanted frequencies from an electrical signal. The common components of a filter circuit are a choke and a capacitor. A choke is an inductor that blocks high-frequency signals, while a capacitor allows low-frequency signals to pass through. Together, they form a low-pass filter that attenuates high-frequency signals and allows low-frequency signals to pass through. Therefore, the correct answer is "choke and capacitor".

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