Which of the following is not a limit switch?
A) Plunger B) Wobble stick
C) Standard selector switch D) Adjustable roller switch
C
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What will be the capacity of an electric furnace rated at 15 kw on 240 volts if it is operated at 208 volts?
A) The capacity will be increased to 20 kw B) The capacity will be reduced by exactly 32 watts C) The capacity will be reduced to 11 kw D) The capacity will remain the same, 15 kw
If a gas with a specific gravity of 1.3 is released in a room, will it be more likely to be found near the ceiling or near the floor?
A) It would be found near the ceiling because its specific gravity is greater than 1 B) It would be found near the floor because its specific gravity is greater than 1 C) It would be found at both the ceiling and the floor because a gas with a high specific gravity would fill up the room. D) The specific gravity of a gas does not affect its position in a room relative to other gases.
____ flashing is installed on walls behind the water-resistant barrier and is interlaced with the roof shingles.
A. Edge B. Kick-out C. Rake D. Step
The job of a ____ or free-wheeling diode is to kill the spike voltage created when the current through a relay is suddenly stopped.
a. flywheel b. kick-back c. blocker d. holdfast