Which of the following statements best describes the function of the logic variable X?

A) X is a variable whose value is always 0.
B) X is a constant value in the indeterminate range of logic values.
C) X is a variable whose value is always 1.
D) X is a variable whose value is 1 or 0.


D

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When a contactor's coil is energized, how much resistance should be measured between terminal "L1" and terminal "T1"?

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Metric measurements are all based on units of one.

Answer the following statement true (T) or false (F)

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Faraday's law states that the voltage induced across a coil of wire is proportional to these two factors

A) the diameter of the conductor and the rate of change of the magnetic flux B) the number of turns in the coil and the rate of change of the magnetic flux C) the size of the coil and the rate of change of the magnetic flux D) the size of the magnets and the rate of change of the magnetic flux

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Which of the following is not a type of drafting triangle?

A. 30-60 B. 45 C. beam triangle D. adjustable triangle

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