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Questions and Answers
What is the over current device rating for the single phase motor with a full load current of 28 A?
What is the over current device rating for the single phase motor with a full load current of 28 A?
- 30 A (correct)
- 25 A
- 40 A
- 20 A
Why should the over current device rating be higher than the full load current for the single phase motor?
Why should the over current device rating be higher than the full load current for the single phase motor?
- To ensure smooth operation
- To reduce power consumption
- To decrease the motor's efficiency
- To prevent tripping during start-up surges and temporary overloads (correct)
What could happen if the over current device rating is lower than the full load current for the single phase motor?
What could happen if the over current device rating is lower than the full load current for the single phase motor?
- Frequent tripping of the motor (correct)
- Improved motor efficiency
- Reduced start-up surges
- Extended motor lifespan
If the over current device rating for the single phase motor is 25 A, what could be the potential consequence?
If the over current device rating for the single phase motor is 25 A, what could be the potential consequence?
Which of the following phase sequences for a 3-phase motor is usually considered 'backward'?
Which of the following phase sequences for a 3-phase motor is usually considered 'backward'?
What happens if the phase sequence of a 3-phase motor is 'backward'?
What happens if the phase sequence of a 3-phase motor is 'backward'?
Why is it important to use the correct phase sequence in a 3-phase motor?
Why is it important to use the correct phase sequence in a 3-phase motor?
What can occur if the phase sequence is incorrect in a 3-phase motor?
What can occur if the phase sequence is incorrect in a 3-phase motor?
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