The Rotor of a Motor Is Accelerated from Rest by a Torque

question 4

Multiple Choice

The rotor of a motor is accelerated from rest by a torque of 250 N m. When it has rotated through 10 revolutions, the gain in angular kinetic energy is:

• A) 2.5kJ
• B) 5.0kJ
• C) 7.85kJ
• D) 15.7kJ

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