Choose the correct J-code, if the tool is at (6, 4, 3) and the center of the arc is at (4, 5, 3):
A. J1
B. J-1
C. J2
D. J-2
Answer: A
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Manual push button line voltage starters are manufactured with two or three line voltage contacts.
Answer the following statement true (T) or false (F)
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To detect light, a photodiode requires:
A) avalanche breakdown. B) reverse bias. C) forward bias. D) zener breakdown.
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A circuit has a current source of 25 mA and an internal resistance (RS) of 75 ?. When the 40 ? load resistance (RL) is shorted, the current through the short is
A) 40 mA B) 8.2 mA C) 326 mA D) 25 mA
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In the down-counter, both the desired preset and the desired accumulated value numbers must be programmed into the instruction before the PLC begins to run.
Answer the following statement true (T) or false (F)
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