8 Questions
What is the over current device rating for the single phase motor with a full load current of 28 A?
30 A
Why should the over current device rating be higher than the full load current for the single phase motor?
To prevent tripping during start-up surges and temporary overloads
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
If the over current device rating for the single phase motor is 25 A, what could be the potential consequence?
Tripping during high load conditions
Which of the following phase sequences for a 3-phase motor is usually considered 'backward'?
CBA
What happens if the phase sequence of a 3-phase motor is 'backward'?
The motor experiences reverse rotation
Why is it important to use the correct phase sequence in a 3-phase motor?
To ensure proper rotation of the motor
What can occur if the phase sequence is incorrect in a 3-phase motor?
Undesirable vibration in the motor
Test your knowledge of over current device rating for single phase motors with a full load current of 28 A. Understand the importance of having an over current device rating higher than the full load current and the potential consequences of having a lower rating.
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