Which of the following is not a common use for a torsion spring?
A. a doorknob
B. a clock
C. a truck
D. a wind-up toy
Answer: D
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Describe the schematic symbols for push buttons.
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. Transformers are among the least efficient machines known. 2. Transformer values of voltage, current, and turns can be computed using formulas. 3.When computing the values of a transformer with multiple secondary windings, treat each secondary as part of the transformer group as a whole. 4.Loads that are intended to operate on 120 V, such as water heaters, electric resistance heating units, and central air conditioners, are connected directly across the lines of the secondary. 5.The nameplate lists the current rating of the windings.
List five types of PPE.
What will be an ideal response?
Better grades of sheet steel are coated with ____________________ ounces of
____________________ per square foot.
Fill in the blank(s) with the appropriate word(s).