If you keep the sensitivity constant, k constant and increase price, the gross profit will always decline.
Answer the following statement true (T) or false (F)
False
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The NEC® requires motor disconnecting means be _____
a. 8 feet or more above the floor b. within sight of the controller location c. guarded d. installed so access is limited to qualified persons
A company that makes micro motion compact Coriolis meters purchased a new packaging system for $600,000. The estimated salvage value was $28,000 after 10 years. Currently the expected remaining life is 7 years with an AOC of $27,000 per year and an estimated salvage value of $40,000. The company is considering early replacement of the system with one that costs $370,000, has a 12-year economic service life, a $22,000 salvage value, and an estimated AOC of $50,000 per year. The MARR for the corporation is 12% per year. (a) Determine the minimum trade-in value necessary now to make the replacement economically advantageous. (b) Write the spreadsheet functions necessary to determine RV using Goal Seek.
What will be an ideal response?
In the accompanying figure, what does the selector switch permit?
What will be an ideal response?
A dc, separately excited motor drives a conveyor belt (constant torque). The terminal voltage of the motor is 120 V. When the conveyor belt is fully loaded, the armature current of the motor is 15 A and the speed of the motor is 180 rpm. The armature resistance of the motor is 2 ?.
a. Calculate the steady-state speed of the motor if the field voltage is reversed. b. Calculate the motor speed if after the field voltage is reversed, the field voltage is reduced by 10%. c. Sketch the speed-torque characteristics and show all operating points. Hint: Assume that the field MMF is linearly proportional to the field voltage.