11. Advantages of robots include:

A. increased productivity
B. ability to withstand hazardous environments
C. good return on investment and better company image
D. All of the above
E. None of the above

12. Light sensors:

A. cannot be used as limit switches.
B. come in a wide variety of mounting styles
C. work in direct sunlight
D. never use infrared light as a light source
E. None of the above

13. Stepping motors:

A. can run at varying speeds
B. can be built to index different amounts by changing the pole configuration
C. can run both clockwise and counterclockwise
D. do not require commutators
E. All of the above

14. Most continuous control actuators:

A. are of the time proportioning type
B. use a 4 to 20 mA current loop input
C. are used with standard continuous control loop
D. (b) and (c) above
E. None of the above

15. Group technology brings together and organizes:

A. automation and tool production
B. parts and simulation analysis
C. documentation and analysis
D. common parts, problems, and tasks
E. None of the above