Lecture 1

1. What are the various elements required to build a CNC system? List the various power-drives to be used.
   
   
2. Explain the construction and working of brushless DC motors.
   

Lecture 2

1. Explain the difference between stepper motor and servo motor.
   
   
2. Describe the construction of Servo motor with a neat sketch. State its applications in manufacturing automation.
   

Lecture 3

1. Classify the various cams used in mechanical engineering applications.
   
   
2. What is a Camoid?
   
   
3. State the applications of cams in manufacturing automation. Explain one of them with a neat sketch.
   

Lecture 4

1. What are the advantages of Linear motor drives over the conventional drives?
   
   
2. Explain the significance of pre-loading in ball screws.
   
   
3. State the applications of ball screws in industry.
   
   

Lecture 5

1. Describe the working of Geneva mechanism with a neat sketch. State its applications.
   
   
2. Explain the method of tool changing in a CNC machining center.
   

Lecture 6

1. What is the difference between a tool turret and a tool magazine?
   
   
2. Suggest suitable conveyors that can be used in a sugar manufacturing industry.