A single-conversion UPS system _____.
a. has poor noise isolation from line to load
b. has excellent frequency stability
c. may achieve zero transfer time
d. supplies AC power directly to critical loads through a series inductor or transformer
d. supplies AC power directly to critical loads through a series inductor or transformer
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A rotary engine is the essence of a vertical takeoff and landing (VTOL) personal aircraft known as the Moller Skycar M400. It is a flying car known as a personal air vehicle (PAV) and it is expected to make its first untethered flight in 2020. The PAV has been under development for 30 years at a total cost of $100 million. Assuming the $100 million was spent in an equal amount each year, determine the future worth at the end of the 30-year period at an interest rate of 10% per year.
What will be an ideal response?
Optional components on the high side of a refrigeration system include:
A) Suction to liquid heat exchanger, economizer, oil level regulator. B) Discharge line muffler, oil separator, liquid receiver, and liquid line filter-drier. C) Suction line filter, accumulator, and evaporator pressure regulator. D) All optional components can be used on the high side of the system.
A(n) ____ is basically two inside seals that are in a back-to-back orientation.
A. outside seal B. packing seal C. double seal D. inside seal
Excessive runout can contribute to pedal ___________.
Fill in the blank(s) with the appropriate word(s).