Engineers at Specialty Manufacturing are writing a justification report to support the purchase of a DNC milling center (mill, controller, microcomputer, installation, etc.). They have learned that the total initial cost will be $90 000. The labor savings and improved product quality will result in an estimated benefit to the company of $2 400 each month over a 10-year time period. If the salvage value of the center is about $12 000 in 10 years, what annual rate of return (annual percentage) on investment did the engineers calculate? Write a computer program or use a spreadsheet if assigned by your instructor. Repeat for estimated benefits of $2 600, $2 800, $3 000, $3 200, and $3 400 per month.
What will be an ideal response?
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Answer the following statement(s) true (T) or false (F)
1. In a squirrel cage motor, the rotor is constructed of steel laminations mounted rigidly on the motor shaft. 2. Locked rotor currents for different motor types vary from 10 to 20 times the full-load current of the motor. 3. Slip refers to the twisting or turning of the motor shaft. 4. By reducing the starting voltage, at the motor terminals, the starting torque is decreased. 5. With impedance starting, reactors are used in series with the motor.
A service advisor can also be called a _______
A) Service writer B) Service Manager C) Shop foreman D) Technician
A _________________________ is drawn when the cutting plane extends completely through the object, usually along a center plane.
Fill in the blank(s) with the appropriate word(s).
A gage pressure reading of 14.7 indicates the __________.
A. pressure above atmospheric pressure B. pressure at atmospheric pressure