In the accompanying figure, the middle electrical symbol stands for a ____.
A. circuit breaker
B. fusible element
C. single-throw knife switch
D. double-throw knife switch
Answer: C
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Continuous loads are calculated at what percentage of the maximum current rating of the overcurrent device?
a. 75% b. 80% c. 90% d. 100%
?Why does the return water on a water-cooled GTAW torch flow out around the power cable?
A. ?The electricity in the cable has to be protected from emitting RF from the high frequency starting voltage. B. ?To reduce the number of hoses to the torch. C. ?So a smaller power cable can be used. D. ?It helps to heat the water a little more to prevent algae and mold from growing.
To correct the wasteful and unnecessary use of potable water in buildings, which form(s) of water flow must be changed?
A) Water that flows into the building B) Water that flows out of the building C) All of the above D) Water that falls onto the site
Find the y-parameters in the circuit shown below.
