Math problems on Decibles and its practical relevance.

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  • Опубліковано 4 жов 2024
  • Sample math problems on decibels
    Video by: Pratik Wagh

КОМЕНТАРІ • 34

  • @NDTVideoLibrary
    @NDTVideoLibrary  5 років тому +1

    Download the Phased Array App from google play store. Just search "PAUT Buddy" or follow this link: play.google.com/store/apps/details?id=com.saurabh_lawande.NDT

  • @DirtyLarry-x3k
    @DirtyLarry-x3k 6 місяців тому +1

    This is a very practical and informative video. The books that I have read were vague on how to apply the formula. Thank you for breaking it down.

  • @mitosynormas
    @mitosynormas 5 років тому +2

    Great Video! Thanks for your time preparing this video!

  • @Mustbenice666
    @Mustbenice666 5 років тому +2

    Great video. I am starting my UT training and got to the section on DB, you really helped me learn the basics but cant seem to get my head around the problems where you need to use anti log.

    • @NDTVideoLibrary
      @NDTVideoLibrary  4 роки тому

      It is mostly useless for field work. Thanks for your kind words

    • @jeffreychavey4161
      @jeffreychavey4161 4 роки тому

      Try to think of it this way when logs are used in the exponent - say you raise a base 10 to “log x/350” ... I see it as ... what number must I raise 10 (we assume the base in that exponent to be 10) to to arrive at x/350? After you apply that rationale you arrive at x/350 as the logical final value. Hopefully that helps. A formal proof on it would make my brains explode for sure

  • @pradeep7091
    @pradeep7091 7 років тому +8

    1. -12dB
    2. 240%
    3. 4.01%
    4. 2551%
    5. 44.9%

    • @NDTVideoLibrary
      @NDTVideoLibrary  7 років тому

      Perfect!

    • @gabishields6873
      @gabishields6873 6 років тому +3

      I tried out the problems, still unsure how to get answer. My answer came ip a few numbers short.Is there another video showing how you solved it?

    • @johnsonirokwe1784
      @johnsonirokwe1784 6 років тому +2

      question # 2 = 237% , how did he gets 240%

    • @NDTVideoLibrary
      @NDTVideoLibrary  6 років тому +1

      It is approximate. Usually the tolerance is + or - 5%

    • @NDTVideoLibrary
      @NDTVideoLibrary  6 років тому

      A few numbers short is not a big deal.

  • @MathsbyDSTomarsir
    @MathsbyDSTomarsir 4 роки тому

    Great

  • @Dipan....9
    @Dipan....9 3 роки тому +3

    This question answers are ....
    12
    100%
    2.51%
    2511%
    45%
    Sir please reply me and I hope your others videos ....

    • @osher87
      @osher87 3 роки тому

      the 800% -25dB was A2=44.9% for me 😆

    • @Dipan....9
      @Dipan....9 3 роки тому

      @@osher87 I do not understand

    • @Dipan....9
      @Dipan....9 3 роки тому

      @@osher87 question number of me 😀😀

    • @osher87
      @osher87 3 роки тому

      @@Dipan....9 last one, you wrote 45%, i got 44.9% in my calculations

  • @vijaycool3582
    @vijaycool3582 4 роки тому

    second practice i am following the same steps but finally i am getting 0.946 ... where i am doing the mistake could you please clear me

    • @pgmattison
      @pgmattison 3 роки тому

      That is decimal needs to be converted into percentages. Move decimal to the right two spaces

  • @mangeram2731
    @mangeram2731 3 роки тому

    Thanks

  • @sachinsahare6807
    @sachinsahare6807 2 роки тому

    A1 20% ad+32 A2 height? sir please this calculation

  • @sreeuttamkumardas2480
    @sreeuttamkumardas2480 3 роки тому

    1) -12

  • @Dipan....9
    @Dipan....9 3 роки тому

    Helo sir

  • @seanalexander458
    @seanalexander458 2 роки тому +1

    1) 12
    2) 237
    3) 4.02
    4) 2512
    5) 44.9

    • @terbulant3129
      @terbulant3129 11 місяців тому

      For 2nd if u do directly it comes 240
      Same for 4th 2880
      As they r multiple of 6