The number of U.S. hog operations has _____, and the average inventory per farm has continued to ______
a. declined/decline c. increased/decline
b. increased/increase d. declined/increase
D
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Compute the following to three decimal places.
Feeder conductor size is adjusted when _____.
a. the ambient temperature that the conductors will pass through is more than 30?C (86°F) b. there is a 2% voltage drop c. there are more than three current-carrying conductors in the raceway d. the load to be supplied is a noncontinuous duty load
To calculate the minimum number of 20-ampere branch circuits required in a dwelling, you should multiply the dwelling square footage by 3 volt-amperes to obtain total volt-amperes, divide by 120 volts to obtain the total amperes, and finally, ____.
A. multiply by 20 and round up to obtain the number of circuits B. divide by 20 and round down to obtain the number of circuits C. divide by 20 and round up to obtain the number of circuits D. multiply by 20 and round down to obtain the number of circuits
FCAW-S, the flux inside the wire core contains ingredients that _____
a. cause arc flutter b. oxidize the weld c. generate a shielding gas d. prevent slag from forming