The problem is said to be steady when the value of a physical quantity under investigation changes over time.
a. True
b. False
Answer: b
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In the identification system for mild steel FCAW electrodes, , for example E71T-2, the final number is used to indicate ____.
A. the minimum tensile strength of the deposited metal B. the primary welding position for which the electrode is designed C. that the filler metal can be used for single or multiple pass welds D. a flux cored electrode
While greasing a U-joint cross, grease exits from only 3 of the four trunnion seals. What should you do first?
A. Leave it, grease will circulate in the cross B. Replace the U-joint assembly C. Pound on the bearing cap with large hammer D. Loosen the journal cap over the affected trunnion and try again
The renewable source that contributes the most to electrical power production in the United States is _____
A) wind B) water C) solar D) coal
A certain circuit is properly fused for a 5-horsepower motor. If the motor is to be replaced by several 
horsepower motors, how many motors will the fuses be able to carry?
Fill in the blank(s) with the appropriate word(s).