When steel is rolled while it is cold, it _____
a. gets softer
b. is annealed
c. gains tensile strength
d. gets thicker
c
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Avoid exposing a lead-acid battery to _____
a. temperatures below 50°F (10°C)
b. sparks or arcs of any type
c. more than two hours of use each day
d. nitrogen
If one branch fails as an open in a parallel circuit
A) circuit current remains unchanged B) circuit current increases C) circuit current decreases D) circuit current drops to zero
When the outdoor temperature falls below the balance point, an air-to-air heat pump _____
A) must be shut down B) can no longer extract heat from the outside air C) requires supplemental heat D) can produce more heat than the structure requires
If both inductive and capacitive components are in an AC circuit, at one particular frequency their reactances will be equal but opposite. This condition is referred to as ____________________.
Fill in the blank(s) with the appropriate word(s).