Standard off-the-shelf induction motors become damaged primarily from __________.
A. overheating
B. cogging at low speeds
C. voltage spikes
D. vibration
Answer: C
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If resources were the basis for dividing the world, where would the national boundaries be? How would they be determined?
By ecosystems? By major continents? By agricultural productivity? By geographic obstacles, such as mountain regions or rivers?
What will be an ideal response?For a building to be properly ventilated:
A) Air must be ducted from the floor to the ceiling. B) Vents should always be installed from the sides of a building structure. C) A vent hole must be installed in the center of a building space. D) Air must be able to flow and exchange properly throughout the building space.
____ are plastics that cannot be reheated and reformed once they have been softened, constituted, and cured.
A. Bioplastics B. Thermosets C. Thermoplastics D. Polymers
What does the acronym IECC stand for?
What will be an ideal response?