A transformer in which the primary and secondary are physically separated and not connected by a conductor is called a(n) _____ transformer.

A. isolation
B. step-up
C. step-down
D. turns


Answer: A

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The R-value of a 2-in.-thick material is 4.0. What is the R-value of the same material if its thickness is 1 in.?

A) 8.0 B) 1.0 C) 0.5 D) 6.0 E) None of the above

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Mice usually drink a lot of water

Indicate whether the statement is true or false

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A very important similarity between gravitational and electric forces is that they are both governed by an inverse ____ law.

A. linear B. exponential C. square D. cube

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The root reinforcement on the inside of a pipe weld should not exceed _____

a. 1/8" (3 mm) b. 3/16" (5 mm) c. 1/4" (6 mm) d. 5/16" (8 mm)

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