A machine center with 5 stations has two categories of downtime: machine jams from defective components and electro-mechanical failures. All 5 stations have a fraction defect rate of .025 with a probability of a jam being .25. Each jam takes 2 minutes to fix before the machine can run again. For electro-mechanical failures, the machine center has a failure rate of 0.05 and downtime for these issues require an average of 5 minutes to fix the problem. The ideal cycle time is 30 seconds. a. What is the hourly production rate? b. What is proportion of acceptable product? C. What is the line efficiency?

Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?