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Questions and Answers
What is the primary function of the induction cup and induction cylinder units?
What is the primary function of the induction cup and induction cylinder units?
- To indicate the direction of power flow and magnitude (correct)
- To operate when the power level exceeds a preset value
- To provide a full-wave rectifier for AC quantities
- To provide high-speed operation with low-level inputs
What type of units are the induction cup and cylinder units often used with?
What type of units are the induction cup and cylinder units often used with?
- Time-overcurrent units (correct)
- Polar units
- Instantaneous overcurrent units
- All of the above
What is the purpose of the reference voltage or current in the induction units?
What is the purpose of the reference voltage or current in the induction units?
- To adjust the magnetic flux paths
- To establish the phase relations for operation (correct)
- To provide a preset power level
- To operate the unit with fault-sensing units
What is the purpose of the permanent magnet in the polar unit?
What is the purpose of the permanent magnet in the polar unit?
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What happens when the gaps are balanced in the polar unit?
What happens when the gaps are balanced in the polar unit?
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What is the purpose of the adjustable magnetic shunts in the polar unit?
What is the purpose of the adjustable magnetic shunts in the polar unit?
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