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  2. Amazon Alexa - Wikipedia

    en.wikipedia.org/wiki/Amazon_Alexa

    Amazon Alexa, or, Alexa, [2] is a virtual assistant technology largely based on a Polish speech synthesizer named Ivona, bought by Amazon in 2013. [3] [4] It was first used in the Amazon Echo smart speaker and the Amazon Echo Dot, Echo Studio and Amazon Tap speakers developed by Amazon Lab126.

  3. Electrical wiring in North America - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring_in_North...

    This is similar to the preceding, but rated for dry or wet environments and conductor temperatures up to 75 °C (167 °F), [18] and is commonly used in subsurface conduits which may fill with water. A great deal of THWN wire is actually dual-rated, and meets THHN the specification as well, so may be used in wet environments up to 75°C or dry ...

  4. Wireline (cabling) - Wikipedia

    en.wikipedia.org/wiki/Wireline_(cabling)

    Wireline truck rigged up to a drilling rig in Canada. In the oil and gas industry, the term wireline usually refers to the use of multi-conductor, single conductor or slickline cable, or "wireline", as a conveyance for the acquisition of subsurface petrophysical and geophysical data and the delivery of well construction services such as pipe recovery, perforating, plug setting and well ...

  5. Electrical wiring - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring

    A wire or cable has a voltage (to neutral) rating and a maximum conductor surface temperature rating. The amount of current a cable or wire can safely carry depends on the installation conditions. The international standard wire sizes are given in the IEC 60228 standard of the International Electrotechnical Commission.

  6. Well - Wikipedia

    en.wikipedia.org/wiki/Well

    When the water in the well is below the water table level, the pressure at the bottom of the well due to the water in the well will be less than P g and water will be forced into the well. Referring to the diagram, if z is the distance from the bottom of the well to the well water level and z T is the distance from the bottom of the well to the ...

  7. Earthing system - Wikipedia

    en.wikipedia.org/wiki/Earthing_system

    In Australia, New Zealand and Israel the TN-C-S system is in use; however, the wiring rules state that, in addition, each customer must provide a separate connection to earth, via a dedicated Earth electrode. (Any metallic water pipes entering the consumer's premises must also be "bonded" to the Earthing point at the distribution Switchboard ...

  8. Tube well - Wikipedia

    en.wikipedia.org/wiki/Tube_well

    A tube well is a type of water well in which a long, 100–200 millimetres (3.9–7.9 in)-wide, stainless steel tube or pipe is bored underground. The lower end is fitted with a strainer, and a pump lifts water for irrigation. The required depth of the well depends on the depth of the water table.

  9. Google Nest (smart speakers) - Wikipedia

    en.wikipedia.org/wiki/Google_Nest_(smart_speakers)

    Through software updates to Google Nest devices and Google Assistant, additional functionality has been added over time. For example, multiple speakers can be set up for synchronized playback of music. An update in April 2017 brought multi-user support, allowing the device to distinguish between up to six people by voice.