Which of the listed instruments can be best...

Question 1 / 270705eccefa3bacbc34ba4d47f3f

Question 1 of 270705eccefa3bacbc34ba4d47f3f

Which of the listed instruments can be best used to locate a grounded stator coil in a synchronous motor onboard ship?

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Question 1 of 27070

Which of the listed instruments can be best used to locate a grounded stator coil in a synchronous motor onboard ship?

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🔍 Key Concepts

• Insulation resistance testing and what it detects in electrical machines • Difference between measuring voltage/frequency and checking for ground faults • How a synchronous motor stator winding is tested for grounding problems

💭 Think About

• Ask yourself: Which instrument is specifically designed to measure the condition of insulation between windings and ground, not just operating values like volts or hertz? • Which tool would you use during maintenance with the motor secured, rather than during normal running, to safely find a grounded coil? • Which instrument applies a higher DC test voltage to check leakage paths to ground in heavy electrical equipment?

✅ Before You Answer

• Identify which option is used to measure insulation resistance to ground, not normal operating parameters • Eliminate instruments that mainly give information during normal operation (like line voltage or system frequency) • Confirm which device is standard for testing motor and generator windings for ground faults on board ships

Question 1 of 27070

Which of the listed instruments can be best used to locate a grounded stator coil in a synchronous motor onboard ship?

Frequency meter

Voltmeter

Megohmmeter

Infrared temperature meter

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