Used within poured-in-place concrete structures, ____ are used to brace tall structures against lateral loading from wind and swaying motions.
A. security walls
B. shear walls
C. tilt-up walls
D. retaining walls
Answer: B
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If the heater in a fixed IEC bimetallic overload relay fails, _____.
a. the heater must be replaced with a heater of the same size b. it and all the other heaters in the overload relay must be replaced c. the entire overload relay must be replaced d. the heater can be replaced with a heater of the same size or one that is slightly smaller
The first nationally recommended electrical code was published in _____.
a. 1850 b. 1895 c. 1911 d. 1923
A(n) _______________, or castrated horse, is easier to handle and has a better disposition than a stallion.
Fill in the blank(s) with the appropriate word(s).
An element in an electric heating unit is applied to a 232-volt power supply. The current flow through the element is 19 amperes. What is the resistance of the element?
A. 8 ohms B. 10 ohms C. 12 ohms D. 14 ohms