Find and graph the approximate magnitude and phase of the CTFT of





using the DFT to approximate the CTFT. Let the time between samples of be 1/16 and sample over the time range 0 ?t<16.


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Rear air-conditioning systems use ________.

A) A TXV to control the refrigerant flow into the front evaporator and an orifice tube with the rear evaporator B) A TXV to control the refrigerant flow into the front evaporator and the rear evaporator C) An orifice tube to control the refrigerant flow into the front evaporator and a TXV with the rear evaporator D) An orifice tube to control the refrigerant flow into the front evaporator and the rear evaporator

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Thompson Mechanical Products is planning to set aside $150,000 now for possible replacement of large synchronous refiner motors when it becomes necessary. If the replacement isn’t needed for 5 years, how much will the company have in its investment set-aside account? Assume a rate of re­turn of 18% per year.

What will be an ideal response?

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What attribute do axonometric drawings have that perspectives do not?

a. drawn in ink c. dimensionable b. smaller d. more difficult to draw

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Why is the push-pull method of recovery preferable for some systems with large quantities of refrigerant?

A) It recovers the greatest amount. B) It does not require certification. C) It is the quickest method. D) It requires no special equipment.

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