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  1. #1
    Freeguy is offline Senior Member
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    Default Antecedent question

    The primary mechanical feature of a turbine is a rotatable element- called the runner, rotor, or wheel- that is mounted on a shaft and has a series of vanes, blades, or buckets arranged around [it's] periphery. When the moving fluid strikes the blades or buckets, the energy of the fluid is transferred to the wheel, causing rotation of the wheel and the turbine shaft.


    The word "its" refers to ..... .
    1- shaft2- element3- turbine4- feature

  2. #2
    bhaisahab's Avatar
    bhaisahab is offline Moderator
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    Default Re: Antecedent question

    Quote Originally Posted by Freeguy View Post
    The primary mechanical feature of a turbine is a rotatable element- called the runner, rotor, or wheel- that is mounted on a shaft and has a series of vanes, blades, or buckets arranged around [it's] periphery. When the moving fluid strikes the blades or buckets, the energy of the fluid is transferred to the wheel, causing rotation of the wheel and the turbine shaft.


    The word "its" refers to ..... .
    1- shaft2- element3- turbine4- feature
    The rotatable element.

  3. #3
    Freeguy is offline Senior Member
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    Default Re: Antecedent question

    I agree with you. However, the answer key says it is shaft. I don't get the reason.

  4. #4
    bhaisahab's Avatar
    bhaisahab is offline Moderator
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    Default Re: Antecedent question

    Quote Originally Posted by Freeguy View Post
    I agree with you. However, the answer key says it is shaft. I don't get the reason.
    Nor do I.

  5. #5
    Tdol is offline Editor, UsingEnglish.com
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    Default Re: Antecedent question

    I don't either.

  6. #6
    emsr2d2's Avatar
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    Default Re: Antecedent question

    Quote Originally Posted by Freeguy View Post
    The primary mechanical feature of a turbine is a rotatable element- called the runner, rotor, or wheel- that is mounted on a shaft and has a series of vanes, blades, or buckets arranged around [it's] periphery. When the moving fluid strikes the blades or buckets, the energy of the fluid is transferred to the wheel, causing rotation of the wheel and the turbine shaft.


    The word "its" refers to ..... .
    1- shaft2- element3- turbine4- feature
    It would only refer to "shaft" if it said "... a rotatable element - called the runner, rotor, or wheel - that is mounted on a shaft which​ has a series of vanes, blades or buckets arranged around its periphery."
    Remember - correct capitalisation, punctuation and spacing make posts much easier to read.

  7. #7
    SoothingDave is offline VIP Member
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    Default Re: Antecedent question

    I work for a company that makes turbines. Trust me, the blades are on the wheel (rotating element) which is on the shaft. The blades are not on the shaft.

  8. #8
    Freeguy is offline Senior Member
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    Default Re: Antecedent question

    I agree with all of you. I'm a Mechanical Engineering as well. The claim of the answer key doesn't make any sense. Please look at the another question made up from this context I have previously posted.

    According to the passage, the runner of turbine ...... .
    1- stops the fluid from moving2- causes the wheel to rotate3- uses its buckets to move the fluid4- is attached to the turbine shaft

    Answer key says it must be 2. However, I go for 4.Because according to the text we have : runner = rotor= wheel. So how can the RUNNER causes itself(wheel) to rotate.( I'm questioning the accuracy of option 2. Besides, we have this sentence in the text : " ....or wheel- that is mounted on a shaft = is attached to the turbine shaft " ( preferring option 4)

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