Mechanical Power Variables

Provided by: ToolingU

"Mechanical Power Variables" covers the changeable aspects of mechanical power. Basic power variables include speed, power, torque, horsepower, and mechanical forces. All machines rely on rotary motion, linear motion, or a combination of the two to perform work, and different power variables relate to each type of motion. Effectively converting one form of motion to another requires a clear understanding of the functional and mathematical relationship between the two forms. Machine operators and maintenance personnel must often determine which power components are most suitable for specific operations, evaluate machine efficiency, and determine when machine components should be replaced. Familiarity with power variables and their effects can help to prevent machine downtime and component failure. After taking this class, users will understand the basic variables involved in power transmission so that they can use mechanical power properly, safely, and efficiently.

Course Objectives:

  • Describe the importance of machine specifications
  • Describe mechanical forces
  • Describe work
  • Describe power
  • Describe work
  • Describe power
  • Distinguish between rotary and linear motion speed variables
  • Explain how to calculate torque
  • Describe thrust
  • Explain the functions of peak torque and power
  • Explain how rotary power is calculated
  • Explain how to use power and speed to calculate torque
  • Describe friction
  • Describe the relationship between friction, heat, and lubrication
  • Describe how tension relates to power transmission
  • Explain the concept of mechanical efficiency.

Recommended Background

  • Recommended for mechanical/electrical/plumbing maintenance technicians.

Course ID







Communication, Critical Thinking, Personal Effectiveness, Diagnostics, Power & Control Electronics, Power Distribution

Method of Delivery


Estimated Effort

2.5 hrs



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