A(n) ____________________ is an overload device that senses the current draw of the compressor through the lockout loop (LL).
Fill in the blank(s) with the appropriate word(s).
current sensing lockout relay
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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?
The fluid circulated through the water coil of a geothermal heat pump system:
A) Is circulated through a heat transfer loop buried in the ground. B) Is circulated through a cooling tower. C) Comes from condensation water collected off the evaporator. D) Is typically connected to the local water utility system.
When a split-phase motor is running, both the start and run windings must be energized.
Answer the following statement true (T) or false (F)
Which of the following statements describe the capability of an open-loop system?
A. It causes the process to change when the set point is varied. B. It cannot make adjustments if a disturbance is encountered. C. It provides automatic control for some types of systems. D. All of the above.