In a purely inductive circuit, the current waveform lags the voltage waveform by _____
a. 0 degrees
b. 45 degrees
c. 90 degrees
d. 180 degrees
c
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IDENTIFY TEST PROCESS SYMBOLS AND DIAGRAMS
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A vacuum gauge attached to a refrigerant line reads 18.2 in. Hg. The barometric pressure reads 29.92 in. Hg. What is the absolute vacuum pressure in the line?
a. 10.72 in. Hg b. 11.65 in. Hg c. 11.72 in. Hg d. 12.65 in. Hg
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Name the Chicago architect and engineer credited with designing the fi rst steel-frame structure.
What will be an ideal response?
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Fine to large cracks that radiate from the center of the seal ring outward indicate _____
a. incorrect seal composition b. mechanical failures c. heat checking d. improperly installed components
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