____ glass is used in areas where the glazing is subject to possible breakage or security of glazed openings is required.
A. Low-E
B. Laminated
C. Insulating
D. Reflective
Answer: B
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An electrical ____ is a tradesman who oversees and manages the building, maintenance, and troubleshooting of electrical and electronic systems.
a. apprentice b. inspector c. estimator d. foreman
Answer the following statement(s) true (T) or false (F)
1. DC series motors that can run at no load may generate runaway speeds and literally throw themselves apart. 2. A drum controller was used on crane motors, elevators, machine tools, and other applications in heavy industry. 3. The reverse direction of a drum controller is accomplished by reversing the current in both the armature circuit and the shunt and series fields. 4. Three-terminal and four-terminal starting rheostats are still widely used. 5. Drum controllers are still frequently used with AC as well as DC motors.
The effect of early 19th-century industrialization on the trans-Allegheny West was to encourage
A. specialized, cash-crop agriculture. B. slavery in the trans-Allegheny West. C. self-sufficient farming. D. farmers to abandon agriculture and sell their land to move to cities for better economic opportunities. E. higher tariffs.
All of the following would immediately rule out the reuse of a valve EXCEPT ____.
A. bent stem B. burned face C. excessive carbon deposits D. non-visible margin