What is the NR power-off minimum torque percentage?

What is the NR power-off minimum torque percentage?

• A. 90-110%
• B. 90%
• C. 80%
• D. 110% max

Answer: (B)

When evaluating NR during a power-off test, you’re looking for the lowest acceptable torque relative to the rated torque. The specification sets this floor at 90% of the rated torque, meaning the torque should not dip below 90% during the test. This provides enough margin to ensure the system remains in a valid operating range and the measurements stay reliable. The other options either describe a range or a maximum value, or propose a level (80%) that’s below the required minimum, so they don’t represent the needed lower bound. Therefore, 90% is the correct minimum torque percentage.

When evaluating NR during a power-off test, you’re looking for the lowest acceptable torque relative to the rated torque. The specification sets this floor at 90% of the rated torque, meaning the torque should not dip below 90% during the test. This provides enough margin to ensure the system remains in a valid operating range and the measurements stay reliable.

The other options either describe a range or a maximum value, or propose a level (80%) that’s below the required minimum, so they don’t represent the needed lower bound. Therefore, 90% is the correct minimum torque percentage.