Voltage is measured in ____.
a. watts
b. ohms
c. amperes
d. volts
d. volts
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How is the Annual Fuel Utilization Efficiency (AFUE) efficiency rating determined?
A) By using the NIST equation for 100 percent efficiency B) By multiplying the amount of combustion air with BTU output C) By comparing new furnace units to the efficiency of older models D) By using the NIST equation for 100 percent efficiency minus losses
When arc welding, the general rule is that arc length should be _____.
a. half the electrode diameter b. equal to the electrode diameter c. twice the electrode diameter d. slightly less than the electrode diameter
There are ____ cubic inches in 1 liter.
A. 45.31 B. 59.02 C. 61.02 D. 75.12
?How does F-CHART software estimate economic values?
A. ?The user inputs relevant economic data. B. ?It uses a large internal database of economic values. C. ?It uses a historical model. D. ?It does not estimate economic values, only solar fractions.