A ____ has a lower secondary voltage than primary voltage.
a. step-down transformer
b. resonant transformer
c. constant voltage transformer
d. planar transformer
a. step-down transformer
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Which of the following termination classes is the only one that provides a seal against external elements
a. Class 1 b. Class 2 c. Class 3 d. Class 5
Which of the following terms describes when the tube-side stream and the shell-side stream flow in opposite directions?
a. Cross flow b. Parallel flow c. Turbulent flow d. Countercurrent flow
Which of the following subsurface diagnostic horizons would you expect to find in a highly weathered soil of the humid tropics?
A) spodic B) oxic C) natric D) cambic E) salic
What is the common operating voltage range on the cells of electronic air cleaners?
A) 480 to 600 volts DC B) 6,000 to 10,000 volts DC C) 120 to 240 volts AC D) 25,000 to 50,000 volts DC