List two advantages offered by wound-rotor motors.
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Wound-rotor motors have the following advantages, which make them suitable for a variety of applications:
• Cost—The initial cost is moderate for the high horsepower units.
• Control—Not all the power need be controlled, resulting in a moderate size and simple controller.
• Construction—The simple construction of the motor and control lends itself to maintenance without the need for a high level of training.
• High-inertia loads—The drive works well on high-inertia loads.
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Reliant Electric Company has erected a large portable building with a first cost of $255,000 and an anticipated salvage of $50,000 after 25 years. (a) Should the switch from DDB to SL depreciation be made? (b) For what values of the uniform depreciation rate in the DB method would it be advantageous to switch from DB to SL depreciation at some point in the life of the building? How does this rate compare with the DDB rate of 2/n?
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Typical TTL HIGH level output voltage is
A) 4.8 V. B) 3.4 V. C) 0.3 V. D) 5.0 V.
In conducting an EVA analysis for year 2 for new equipment on its primary product line, Analogy, Inc., manufacturers of preassembled blower packages and other water treatment components, determined the EVA to be $28,000. Analogy uses an after-tax interest rate of 14% per year and its Te is 35%. The new equipment had a first cost of $550,000 and was MACRS depreciated using a 3-year recovery period. Since the company CEO knew that the GI was $500,000, he asked you to determine the operating expenses (OE) associated with the equipment in year 2.
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What is the purpose of the driver protection module?
What will be an ideal response?