Heavy Duty Equipment Technician Red Seal Exam Prep · Question
In a heavy equipment final drive, the reduction ratio is 30:1. If the input shaft (from the transmission) spins at 1500 RPM, at what RPM will the final drive output shaft (to the wheel) rotate?
The output speed is calculated by dividing the input speed by the reduction ratio. So, 1500 RPM / 30 = 50 RPM. This substantial reduction increases torque to th
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Question: In a heavy equipment final drive, the reduction ratio is 30:1. If the input shaft (from the transmission) spins at 1500 RPM, at what RPM will the final drive output shaft (to the wheel) rotate?
Answer options: ✅ 50 RPM
- 1500 RPM
- 45000 RPM
- 30 RPM
Correct answer: 50 RPM
Explanation: The output speed is calculated by dividing the input speed by the reduction ratio. So, 1500 RPM / 30 = 50 RPM. This substantial reduction increases torque to the drive wheels, as per general mechanical principles of gearing.
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