Question 446Electricity & Electronics - QMED
70% to passYou are troubleshooting the control circuit shown in figure "A" of the illustration utilizing on-line techniques. With the start button depressed, the following readings are obtained with a voltmeter: (Refer to Illustration EL-0123
AA
BB
CC
DD
AI Explanation
The correct answer is B. This is because when the start button is depressed, the voltmeter should read the voltage at point B, which is the input voltage to the control circuit. The other points (A, C, and D) are internal to the circuit and would not directly indicate the input voltage. The other options are incorrect because A, C, and D do not represent the input voltage to the circuit, which is the key parameter being measured when troubleshooting the control circuit.
Related Questions
Q420:What is indicated by gradual blackening at the ends of component "4" shown in fi... Q442:When troubleshooting a motor controller, all indications are that a relay coil s... Q398:As shown in the illustration, what is the functional purpose of the normally clo... Q272:Brushes in a DC generator must be positioned in the neutral plane to avoid exces... Q80:What would be the total current flowing in the circuit shown in figure "B" of th...
Ready to test your knowledge?
Take a Electricity & Electronics - QMED Practice ExamOfficial Resources