Reclamation

Quiz

1. What are two basic angles that describe the flow nature of material?

2. True or false? The higher the surcharge angle, the more material can be stacked on the belt for conveying.

3. What is the difference in angle dimensions between the Angle of Surcharge and Angle of Repose?

4. Will higher conveyor speeds increase capital equipment costs?

5. What is the primary method of addressing buildup on return rolls?

6. For every standard bearing size, there are still possible variations in what, which impacts how the bearing performs?

7. Where do most bearing manufacturers place the basic size information?

8. What is the biggest way motors lose energy?

9. When evaluating a changeover to premium-efficiency motors, what two main factors should be considered?

10. Every 1 percent reduction in motor demand cuts what percentage off the industry-wide bill?

Quiz Answers

1. Angle of Repose and Angle of Surcharge

2. True

3. The surcharge angle is normally 5 degrees to 15 degrees less than the Angle of Repose.

4. No. It will normally decrease them.

5. Use rubber discs on the return side of the belt.

6. Seals, internal clearance, accuracy class, material and cage type

7. On the exterior of bearing components

8. The "copper" losses that result naturally from current passing through the copper-wire windings

9. Cost of electrical power and the hours of operation

10. 0.64 percent