As shown in figure "A" of the illustration,...

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Question 1 of 205eccefa4bacbc34ba4d4851a

As shown in figure "A" of the illustration, if in troubleshooting the control circuit using on-line techniques with a voltmeter with the start button depressed and the following readings are taken, what is the problem? "1" to "X2" reads 115 VAC; "2" to "X2" reads 115 VAC; "3" to "X2" reads 115 VAC; and "4" to "X2" reads 115 VAC See illustration EL-0123.

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🔍 Key Concepts

• Control circuit voltage tracing using one side of the secondary (X2) as the reference • Effect of an open in a series circuit on voltmeter readings as you move step‑by‑step along the circuit • Location and normal state of the stop pushbutton, start pushbutton, overload contacts, and coil in figure A

💭 Think About

• If the control circuit were healthy and the start button held in, what voltage would you expect between point 4 and X2, considering that point 4 is between the coil and the overload contacts? • Which single component, if open, would cause every test point (1, 2, 3, and 4) to be at line potential relative to X2? • Compare what would happen to the readings at points 3 and 4 if the coil were open instead of the device to the right of point 4.

✅ Before You Answer

• Confirm on the diagram that the meter reference lead is on X2, and trace the path from X1 → 1 → 2 → 3 → coil → 4 → overloads → X2. • Note which device is the last one in series closest to X2 and how an open there affects upstream voltages. • Mentally test each answer choice by "opening" that device on the diagram and predicting the readings at 1–4 to see which fault makes all four points read 115 VAC.

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