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  2. Siren (alarm) - Wikipedia

    en.wikipedia.org/wiki/Siren_(alarm)

    A 2007 study found passenger compartment sound levels could exceed 90dB(A). [18] Research has shown that sirens mounted behind the engine grille or under the wheel arches produces less unwanted noise inside the passenger cabin and to the side and rear of the vehicle while maintaining noise levels to give adequate warnings. [19]

  3. Electric vehicle warning sounds - Wikipedia

    en.wikipedia.org/.../Electric_vehicle_warning_sounds

    The 2011 Nissan Leaf was the first electric car equipped with Nissan's Vehicle Sound for Pedestrians called 'Canto'.. Electric vehicle warning sounds are sounds designed to alert pedestrians to the presence of electric drive vehicles such as hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), and battery electric vehicles (BEVs) travelling at low speeds.

  4. Electromagnetically induced acoustic noise - Wikipedia

    en.wikipedia.org/wiki/Electromagnetically...

    resistors: the braking resistors of electric trains, used to dissipate electrical power when the catenary is not receptive during braking, can make electromagnetically induced acoustic noise; coils: in magnetic resonance imaging, "coil noise" is that part of total system noise attributed to the receiving coil, due to its non-zero temperature.

  5. Noise, vibration, and harshness - Wikipedia

    en.wikipedia.org/wiki/Noise,_vibration,_and...

    Noise, vibration, and harshness (NVH), also known as noise and vibration (N&V), is the study and modification of the noise and vibration characteristics of vehicles, particularly cars and trucks. While noise and vibration can be readily measured, harshness is a subjective quality, and is measured either via jury evaluations, or with analytical ...

  6. Wire loop game - Wikipedia

    en.wikipedia.org/wiki/Wire_loop_game

    The circuit is connected to a light or sound-emitting device of some sort, so that when the loop and the wire touch, the light-emitting device will light up, and the sound-emitting device will make a sound, traditionally a buzzing noise. In commercial implementations of the game the wire is usually bent along a single axis.

  7. Button battery inside children's book causes car seat fire ...

    www.aol.com/button-battery-inside-childrens-book...

    A button battery inside a children's book caused a car seat to burst into flames, according to a North Carolina fire department. The George Hildebran Fire & Rescue Department, located in Burke ...

  8. Automotive battery - Wikipedia

    en.wikipedia.org/wiki/Automotive_battery

    A typical 12 V, 40 Ah lead-acid car battery. An automotive battery, or car battery, is a rechargeable battery that is used to start a motor vehicle.. Its main purpose is to provide an electric current to the electric-powered starting motor, which in turn starts the chemically-powered internal combustion engine that actually propels the vehicle.

  9. Automotive electronics - Wikipedia

    en.wikipedia.org/wiki/Automotive_electronics

    The earliest electronic systems available as factory installations were vacuum tube car radios, starting in the early 1930s.The development of semiconductors after World War II greatly expanded the use of electronics in automobiles, with solid-state diodes making the automotive alternator the standard after about 1960, and the first transistorized ignition systems appearing in 1963.

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