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  • Q1:1. The normal time to perform the regular work cycle for a certain manual operation is 3.23 min. In addition, an irregular work element whose normal time is 1:25 min must be performed every 5 cycles. The PFD allowance factor is 15%. Determine (a) the standard time (b) how many work units are produced if the worker's performance in an 8-hour shift is standard. 2. Determine the anticipated amount of time lost per 8-hour shift when an allowance factor of 15% is used, as in the previous question. 3. Now that the standard is set (T= 4.00 min) and given the data from the previous questions how many work units would be produced if the worker's average performance during an 8-hour shift were 125% and the hours worked were exactly 6.956 hour, which corresponds to the 15% allowance factor.See Answer
  • Q2:1. The normal time for a repetitive task that produces two work units per cycle is 3.0 min. The plant uses a PFD allowance factor of 15%. Determine (a) the standard time per piece and (b) how many work units are produced in an 8-hour shift at standard performance. 2. The normal time to perform a repetitive manual assembly task is 4.25 min. In addition, an irregular work element whose normal time is 1.75 min must be performed every 8 cycles. Two work units are produced each cycle. The PFD allowance factor is 16%. Determine (a) the standard time per piece and (b) how many work units are produced in an 8-hour shift at standard performance. (c) Determine the anticipated amount of time worked and the amount of time lost per 8-hour shift that corresponds to the PFD allowance factor of 16%. 3. A worker performs a repetitive assembly task at a workbench to assemble products. Each product consists of 25 components. Various hand tools are used in the task. The standard time for the work cycle is 7.45 min, based on using a PFD allowance factor of 15%. If the worker completes 75 product units during an 8-hour shift, determine (a) the number of standard hours accomplished and (b) worker efficiency. (c) If the worker took only one rest break, lasting 13 min, and experienced no other interruptions during the 8 hours of shift time, determine her worker performance.See Answer
  • Q3:Question A) Deduce the type of failures (either ductile or brittle) for the metals in each image and justify your deduction. B) Discuss how each failure can be monitored via a NDT method. C) How can both types of failure be controlled in the future?See Answer
  • Q4:Question Fatigue failure was the root cause of this metal gear failure A) Use the image to confirm this root cause. B) How can fatigue failure in this gear be controlled in the future?See Answer
  • Q5:Question What are some potential causes for spalling that occurred in the inner race of this bearing?See Answer
  • Q6:Question • In this image of a valve stem, identify whether the failure has occurred due to distortion or fracture. Justify your answer 02113-1 9 10 11 2 fr HE 4 EMSee Answer

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