1. What does a back iron do and when is it needed? 2. Can you mix and match rotors and stators from different models? For example, can you take a UTH rotor and use it with a UTS stator? 3. What are Hall devices? 4. What are through holes on the Hall sensor PCB board of the motor used for? 5. Do I need Hall devices for my motor? 6. What is the difference between the Torque Constant (Kt) and Motor Constant (Km) of a motor? 7. What is inertia and how is it calculated for a rotary motor? 8. What is the difference between a BLAC and BLDC motor? What type of motor does Celera Motion offer? 9. What type of motors does Celera Motion manufacture? 10. How can I purchase a motor? 11. What does ULT, UTH, UTO and UTS mean? 12. What defines the direction in which the motor will spin? 13. How much noise should be expected from the motor while it is running? 14. What is the operating voltage of Celera Motion motors? 15. What type of winding configuration is used to wind your stators? Wye or Delta? 16. What is the maximum temperature rating of Celera Motion motors? 17. What is the maximum speed that Celera Motion motors can achieve? 18. What is the benefit of an outer-rotating motor, such as Omni UTO? 19. How do you calculate Continuous Torque? 20. What are radial and axial runout error? 21. What is the accuracy of Celera Motion motors? 22. What is cogging torque? 23. What is torque ripple? 24. How do you install a frameless motor in a housing? 25. Do you need a magnetic grade steel for the backiron of the rotor of a motor? 26. How do you calculate the max speed of linear motor? 27. Do Celera Motion motors work in vacuum environments? 28. What are the advantages of a Celera Motion direct drive motor? 29. Without changing dimensions of a motor, how does a different winding principle affect the motors parameter? 30. Do your motors work with both sinusoidal and trapezoidal drives? 31. What is a slotless motor? 32. What are the benefits of a low cog motor? 33. What types of drives do your motors work with?