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Complete the table below
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R1
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R2
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R3
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R4
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R3//R4
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Total
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E
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10V
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I
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R
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200Ω
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300Ω
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400Ω
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400Ω
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Create a truth table based upon the ladder diagram below:
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Create a truth table based upon the ladder diagram below
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Draw a ladder diagram of a 2-wire circuit using a temperature switch.
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Draw a ladder diagram of a 3-wire circuit using 2 E-Stops
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I thought that I wired up the circuit shown below. As soon as I plugged the circuit in, the motor starter coil immediately energized and pulled-in. When I push either STOP button, the coil will de-energize. Give at least two things that could be wrong.
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I wired up another motor starter, identical to the circuit shown in problem #6. I am 100% sure that all of the wiring is correct. When I plug my circuit in, nothing happens (which is how it should be, right?), but when I press either START button, the coil will not energize. What could be causing this problem? Give at least two things that could be wrong.
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Using the same circuit that’s shown in problem #6, what voltage should I measure across the coil when it is energized? (Zero, Ghost, or Source)
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Using the same circuit that’s shown in problem #6, what voltage should I measure across any of the START pushbuttons when the coil is energized? (Zero, Ghost, or Source)
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How can using a 2-wire circuit be dangerous?