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R006 Assignment Submission

You can see work assigned to you in the class stream. You complete and turn it in online in Classroom. Your teacher sees immediately in the class stream that work is turned in.

You can submit an assignment in 2 ways:

  • If you need to attach anything to the assignment, see Turn in an assignment.
  • If you don’t need to attach anything, see Mark an assignment as done.

You can edit an assignment after submitting it. But any assignment turned in or marked done after the due date is marked late.

Turn in an assignment

  1. Sign in to Classroom with your Google Account.

    For example, you@yourschool.edu or you@gmail.com. Learn more.

  2. Click the class and then click the assignment.

If there’s a form attached to the assignment

  1. Click the form and answer the questions.
  2. Click SubmitMark as done and confirm.

    If the form is the only work, your assignment is marked Done.

  3. If there's more to do for the assignment, click Open assignment.

If there’s a document with your name attached to the assignment

If your teacher attached a document with your name in the title, it’s your personal copy to review and edit. As you work on it, your teacher can review your progress before you click Turn in.

  1. Click the thumbnail to open and review the document.
  2. (Optional) Enter your information.
  3. Click Turn In.

When you turn in the assignment, your teacher will see the document labeled with your name.

Attach or create items for your assignment

  1. If your teacher attached a file, click the thumbnail to open and review it.
  2. (Optional) To attach an item:
    1. Next to Add, click the Down arrow Drive , Link , or File .
    2. Select the attachment or enter the URL for a link and click Add.
  3. (Optional) To create a new attachment:
    1. Next to Create, click the Down arrow and select the file type.

      Under Your work, a new file appears.

    2. Click the file and enter your information.

    Note: You can attach or create more than one file.

  4. (Optional) To remove an attachment, click Remove .
  5. (Optional) Add a private comment to your teacher and click Post.
  6. Click Turn In and confirm.

    The status of the assignment changes to Done.

Note: You can also access your assignments on the To-do page or in the class calendar.

Mark an assignment done

  1. Sign in to Classroom with your Google Account.

    For example, you@yourschool.edu or you@gmail.com. Learn more.

  2. Click the class and then click the assignment.
  3. (Optional) Add a private comment to your teacher and click Post.
  4. Click Mark As Done and confirm.

    The status of the assignment changes to Done.

Note: You can also access your assignments on the To-do page or in the class calendar.

Edit your assignment after turning in or marking done

  1. Sign in to Classroom with your Google Account.

    For example, you@yourschool.edu or you@gmail.com. Learn more.

  2. Click the class and then click the assignment.
  3. Click Unsubmit and confirm.

    This assignment is now unsubmitted.  Be sure you resubmit it before the due date.

  4. Make any changes.
  5. (Optional) Attach any new files or links.
  6. (Optional) Add a private comment to your teacher and click Post.
  7. Click Turn In and confirm.

    The status of the assignment changes to Done.

Note: You can also access your assignments on the To-do page or in the class calendar.

Important: Any assignment that's turned in or marked done after the due date is marked late, even if you previously submitted the work before the due date.

Unformatted text preview: Given N=1500 rpm → ω = 2*Pi*N/60 = 157.08 rad/s. Rod length l = 150 mm = 0.15 m; Crank r = 0.06 m; and Pin off-set d = 0. PISTON VELOCITY AND ACCELERATION:- From equations in slide#24, we have v = 0 for θ=0 o (intake TDC). Looks like some brackets are missing in the equation given there because it is dimensionally incorrect. Please correct the equation for acceleration as follows: a = 0.06*(157.08) 2 { 1 + [(0.06/0.15)* (cos 2- 0)/1] + [(0.06/0.15) 3 *(cos 2 0 * 0)/1] } = 2072.63 m/s 2 . RECIPROCATING FORCE:- Given that M REC = 3 kg and (e/l) ratio is 0.005, using equation in slide#25, we have F REC = 3 kg* 0.06*(157.08) 2 *[cos270 - (0.005*sin270) + (cos(2*270)*0.06/0.15)] = -1754 N or 1.75 kN magnitude force. *Notice that the θ value during compression BDC would be 180 o (for a value of 0 o at intake TDC) and hence θ = 270 o during the mid-way of compression. 5. Find the value of split pin angle for a V8 engine with a bank angle of 60 o . Also, perform an engine unbalance analysis for this engine by evaluating the first order and second order forces. Hint: Refer to slides 49-52 SPLIT PIN ANGLE:- Firing interval (FI) = 720/8 = 90 o . Bank angle (given) = 60 o . So, the split pin angle (SPA) = 90 - 60 = 30 o . ENGINE UNBALANCE ANALYSIS:- Crank Pin arrangement for this engine can be seen in slide#63 shown as below: As calculated before, SPA or δ = 30 o . Then the engine unbalance forces due to the reciprocating masses can be evaluated as follows (similar to that in slide#49).masses can be evaluated as follows (similar to that in slide#49)....
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