AUTRY TECH DRAFTING/DESIGN

Read Chapter 22 on page 747. Answer the question below and enter into OPEN LMS under 3M11W.

​

​

1. The shape of cam is determined by the 

​

A. required motion of the follower.

B. Rotational velocity of the cam.

C. type of cam used.

D. four-bar linkage.

E. type of follower used.

​

2. The most popular type of cam used.

​

A. plate cam.

B. face cam.

C. drum cam.

D. conjugate cam.

F. index cam.

​

3. The area of cam displacement diagram where the follower does not rise or fall is called.

​

A. The straight-line motion.

B. dwell.

C. idle.

D. retarded motion.

E. none of the above.

​

4. The follower motion that is commonly referred to as constant acceleration is 

​

A. parabolic.

B. harmonic. 

C. cycloidal

D. modified trapezoidal.

E. modified sine.

​

5. _____ Motion is also referred to as crank motion.

​

A. parabolic.

B. harmonic. 

C. cycloidal

D. modified trapezoidal.

E. modified sine.

​

6. _____ motion is noted for jerk-free motion.

​

A. parabolic.

B. harmonic. 

C. cycloidal

D. modified trapezoidal.

E. modified sine.

​

7.  _____ motion is also known as a retarded motion.

​

A. parabolic.

B. harmonic. 

C. cycloidal

D. modified trapezoidal.

E. modified sine.

​

8. Most cam displacement diagrams have cam displacements of how many degrees?

​

A. 90 degrees

B. 180 degrees

C. 270 degrees

D. 360 degrees

E. 5 degree increments

​

9. The smallest circle that can be drawn on a plate cam profile is called

​

A. displacement.

B. prime.

C. pitch. 

D. base.

E. trace.

​

10. The ____ cam is used to produce an indexing motion

​

A. Geneva

B. conjugate 

C. yoke-type

D. Hopkins

E. positive-motion

​

11. Ratchet wheels are usually used in combination with

 

A. followers.

B. clutches.

C. indexing yokes.

D. prawls.

E. linkages.

 

12. The groove in a face cam is developed

 

A. as a surface development.

B. using a linkage diagram. 

C. using a displacement diagram.

D. any of the above

E. none of the above

 

13. An actuator usually produces a ____ motion.

 

A. straight-line

B. angular

C. compound 

D. parabolic 

E. curved

 

14. The relationship of the movements of various machine members can be conveniently by

​

A. showing the motion path of the mechanism. 

B. drawing the extreme positions of the mechanism.

C. calculating the indicator path of the mechanism.

D. constructing a displacement. 

E. constructing a timing diagram.