Notches left in a base metal _____
a. aid in welding additional structures to the work
b. assist in later gouging operations
c. have a tendency to fill and smooth out when the base metal is heated
d. have a tendency to trap slag during welding
d
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1. The magnetic effects of magnets are concentrated at their poles.
2. A magnetic field consists of lines of force, which are called the magnetic flux.
3. In the accompanying figure the conductor will tend to move down.
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