The speed regulation of a DC motor is given as
A. NnL/NfL.
B. NnL - NfL.
C. (NnL - NfL)/NfL.
D. (NfL - NnL)/NnL.
Show Answer
Answer: C
Share your understanding of this question with the correct explanation.
The speed regulation of a DC motor is given by the formula:
Speed Regulation = (NnL - NfL) / NfL
where NnL is the no-load speed of the motor and NfL is the full-load speed of the motor.
The speed regulation measures the change in speed of the motor from no-load to full-load conditions. It provides an indication of the motor’s ability to maintain a relatively constant speed under varying load conditions.
In the formula, (NnL - NfL) represents the change in speed between no-load and full-load, and dividing it by NfL provides a percentage representation of this change relative to the full-load speed.
Therefore, the correct answer is C: (NnL - NfL)/NfL.