Red Seal Industrial Mechanic (Millwright) Practice Exam

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What characterizes a high-speed shaft?

Low RPM capability with higher torque output

High RPM capability, lower torque output, and specific design for efficiency at speed

A high-speed shaft is characterized by its ability to rotate at high revolutions per minute (RPM) while maintaining lower torque output. This design is specifically tailored for efficiency at these elevated speeds, enabling machinery to operate smoothly and effectively. High-speed shafts often incorporate materials and engineering designs that reduce friction and wear, allowing them to perform optimally in applications where speed is prioritized over torque.

In contrast to high-speed shafts, options that describe low RPM capability with higher torque output or moderate RPM capability with a balanced torque output do not align with the key features of high-speed shafts. Additionally, while specialized designs for low friction adjustments may indeed apply to certain shaft designs, they are not exclusive characteristics defining high-speed shafts.

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Moderate RPM capability with a balanced torque output

Specialized design for low friction adjustments

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