One year ago a machine was purchased at a cost of $2,000, to be useful for 6 years. However, the machine has failed to perform properly and has a costs of $500 per year per year for repairs, adjustments, and shutdowns. A new machine is available to accomplish the functions desired and has an initial cost of $3,500. Its maintenance costs are expected to be $50 per year during its service life of 5 years. The approximate market value of the present machine has been roughly $1,200. If the operating costs (other than maintenance) for both machines are equal, show whether it is economical to purchase the new machine. Perform a before-tax study using an interest rate of 12%, and assume that the salvage values will be negligible. 2.

One year ago a machine was purchased at a cost of $2,000, to be useful for 6 years. However, the machine has failed to perform properly and has a costs of $500 per year per year for repairs, adjustments, and shutdowns. A new machine is available to accomplish the functions desired and has an initial cost of $3,500. Its maintenance costs are expected to be $50 per year during its service life of 5 years. The approximate market value of the present machine has been roughly $1,200. If the operating costs (other than maintenance) for both machines are equal, show whether it is economical to purchase the new machine. Perform a before-tax study using an interest rate of 12%, and assume that the salvage values will be negligible. 2.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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General safety guidelines

Safety guidelines are the set of rules and codes that must be followed in the workplace for the occupational safety of workers, the machines, and the equipment that are present inside the workshop premise. There are many unsafe conditions and hazardous materials inside the workshop that makes prey for certain risk factors associated with health conditions. Extreme safety precautions must be taken inside the work area just like the precautions and practices that are been followed for Corona Virus Disease 2019 (COVID-19). People can also educate themselves by joining various health programs and camps. These will provide them with the necessary skills and knowledge about safety awareness. Occupational Safety and Health Administration (OSHA) thrives to create a safe and healthy environment for the workers working in the industries and provides them with proper education and training.

Question

One year ago a machine was purchased at a cost of $2,000, to be useful for 6
years. However, the machine has failed to perform properly and has a costs of
$500 per year per year for repairs, adjustments, and shutdowns. A new machine is
available to accomplish the functions desired and has an initial cost of $3,500. Its
maintenance costs are expected to be $50 per year during its service life of 5
years. The approximate market value of the present machine has been roughly
$1,200. If the operating costs (other than maintenance) for both machines are
equal, show whether it is economical to purchase the new machine. Perform a
before-tax study using an interest rate of 12%, and assume that the salvage values
will be negligible.
2.

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The following data were obtained from a time study performed on a horizontal milling machine: Average manual effort time per cycle: 4.62 minutes. Average cutting time (electric feed): 3.74 minutes. Average performance rating: 115%. Backlash due to machine (power supply): 10%. Slack due to fatigue: 15%. What is the standard time for the operation?
In a production operation, a high-speed steel face cutting tool with 8 cutting edges is used for the face milling of a rectangular workpiece with dimensions of 650 mm length x 120 mm width x 100mm thickness and 4 J/mm3 specific energy of cutting. The cutting tool has a diameter of 60 mm and is cutting with a rotational speed of 500 RPM and a chip load of 0.1 mm/tooth. If the part thickness is to be reduced to 95 mm using a 5 mm depth of cut and a width of cut of 40 mm, then find the following; a) The total time (min) to machine the workpiece b) Material removal rate during the cut c) The power (kw) consumed while the tool is engaged in cutting of the workpiece d) The Cutting force Fc
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In a factory where there are three shifts: The machine overhead cost is found to be £8.20 / hr, the labour overhead cost is found to be £30.20/hr, and the premises overhead cost is found to be £3.50/hr. Using the principle of overhead costing: If a single component takes 23 minutes to manufacture on the milling machine. What is the cost / part? You should include machine costs, labour costs and premises costs in your answer, but you can neglect material and energy costs. Express your answer in £ rounded up to the nearest penny.