Water that contains a high percentage of minerals is called _____.
a. soft water
b. mineralized water
c. ionized water
d. hard water
d. hard water
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____ electrodes have a current-carrying capacity similar to that of pure tungsten, and may be used for both AC and DC welding currents.
A. Zirconium tungsten B. Cerium tungsten C. Lanthanum tungsten D. Thoriated tungsten
Traditional methods of data presentation are in the form of charts and graphs. Charts include familiar items such as pie charts and bar charts. Graphs, which are usually more technical, show data trends when the relationship between two or more ____________________ is plotted on orthogonal axes.
Fill in the blank(s) with the appropriate word(s).
Interchanging the rotor leads of a wound rotor motor reverses the direction of the motor.
Answer the following statement true (T) or false (F)
Adding a little extra refrigerant over the amount recommended by the manufacturer:
A) Does not affect system capacity or efficiency, but provides a buffer against future refrigerant loss and nuisance call backs. B) Reduces system capacity but slightly increases system efficiency. C) Increases system capacity slightly but reduces system efficiency. D) Reduces both system capacity and efficiency.