Give an overview of the process of shielded metal arc welding.
What will be an ideal response?
Shielded metal arc welding (SMAW) is a welding process that uses a flux-covered metal electrode to carry an electrical current. The current forms an arc across the gap between the end of the electrode and the work. The electric arc creates sufficient heat to melt both the electrode and the work. Molten metal from the electrode travels across the arc to the molten pool on the base metal, where they mix together. The end of the electrode and molten pool of metal is surrounded, purified, and protected by a gaseous cloud and a covering of molten flux produced as the flux coating of the electrode burns or vaporizes. As the arc moves away, the mixture of molten electrode and base metal solidifies and becomes one piece. At the same time, the molten flux solidifies forming a solid slag. Some electrode types produce heavier slag coverings than others.
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Technician A says when using an electronic wheel balancer, clean all the mud from the wheel before attempting to balance the wheel and tire. Technician B says to leave all the old wheel weights on the wheel before attempting to balance the wheel and tire. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Answer the following statement(s) true (T) or false (F)
1. The key to the speed with which binary information can be processed is that there are only three states, each of which is distinctly different. 2. Words can be made up of 32 bits, 16 bits, or 8 bits. 3. For fixed I/O controllers, all of the I/O are in slot 1. 4. MicroLogix processors have the same program files as the SLC 500 and three additional files. 5. When a computer program is first developed and edited, it is done in the program mode or the on-line mode.
Briefly describe the three steps involved with poured-in-place concrete construction.
What will be an ideal response?
The symbol ____ is often used to represent the values for dead loads.
A. DL B. LL C. FL D. RL