For a specific motor, what range of resistance would you expect to measure between leads 7 and 9?

Study for the Independent Electrical Contractors IEC Year 3 Test. Utilize multiple choice questions, each with hints and explanations. Boost your readiness and confidence for the exam!

The expected range of resistance measured between leads 7 and 9 of a motor is typically in the lower range, such as between 0.2 and 20 ohms. This is because electric motors, particularly induction motors, usually have low winding resistance due to their construction. The winding resistance is an important factor as it affects the performance characteristics of the motor, including its efficiency and how it behaves under load.

Low resistance values indicate that the windings are in good condition and capable of carrying the necessary current without excessive voltage drop. If the resistance were to rise significantly beyond this range, it might indicate potential issues such as shorted windings or problems with the insulation, which would not be expected for a properly functioning motor. Hence, a measured resistance in this range would be considered normal and indicative of proper motor operation.

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