Which of the following terms is used to describe the science of computer control systems?
A. electronics
B. processing protocols
C. cybernetics
D. communications technology
Answer: C
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Which of the following terminal combinations would show an open circuit if the internal overload device in a hermetic compressor should open due to excessive heat?
A. common to start B. common to run C. start to run D. both a and b
____________________ lines are used in conjunction with extension lines to show the view of how long a particular feature in the building is.
Fill in the blank(s) with the appropriate word(s).
The formula ? × D is used to calculate _____.
a. diameter b. circumference c. radius d. surface area
for the elevator going upward.
An elevator consists of the cabin, motor, counterweight, cables, and pulleys. The elevator cabin is full and is moving downward. The mass of the cabin plus people is greater than the mass of the counterweight. Explain the operation of the motor in terms of energy transfer, and indicate the speed-torque quadrant for this motion.