Which statement best describes the phase angle of a parallel RLC circuit at resonance?
A) With a net reactance at maximum the phase angle is zero.
B) With a net reactance at minimum the phase angle is zero.
C) Total current flow is minimum.
D) either A or C
D
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The economic status of the average American at the end of the Revolutionary War was
A. better than before the war. B. probably worse than before the war. C. about the same as before the war. D. more closely tied to Britain than before the war. E. more closely tied to France than before the war.
The most widely used types of packaged units in residential air-conditioning applications that use air to remove the heat from the condenser are ____________________ packaged units.
Fill in the blank(s) with the appropriate word(s).
The purpose of the charcoal filter in the vacuum hose between the engine and the vacuum brake booster is to ________
A) Act as a one-way check valve to help keep a vacuum reserve in the booster B) Filter the air entering the engine C) Trap gasoline vapors to keep them from entering the booster D) Direct the vacuum
The risers and treads of some shop-built stairs are mortised together to _____
a. speed up assembly b. properly align the treads c. reduce fabrication costs d. prevent squeaking