answer question 3

Q3 The snapback method was used in time study for a worker-machine cycle consisting of three elements: D, E, and F as shown in Table 2. Elements and E are worker-controlled and were performance rated at 100% for element D and 90% for element E during the time study. Element F is machine-controlled. Elements E and F are performed simultaneously. The Personal, Fatigue and Delay (PFD) allowance is 14% and the machine allowance is 10%. One work piece is produced each cycle. Analyze the quantity in pieces that can be produced if the worker works 7 hours and 30 minutes during an 8-hour shift. (10 marks) Table 2: Observation Time Element D E Observed time (minute) 3.00 1.76 F 1.50