1. Which of the following best describes the purpose of welding?

2.
The hand tool shown above is a

3.
Figure #1

Figure #2

Figure #3

Figure #4
Figure #1 above shows the initial position of a piston that is connected to a crankshaft by a tie ro","Figure #2 shows the relative positions after the crankshaft is rotated 90 degrees (one quarter of a revolution) in the direction shown. Figure #3 shows the relative positions after another 90 degrees of rotation. In Figure #4, what will be the position of the tie rod attachment to the crankshaft after yet another 90 degree rotation?

4. A crane is primarily used to perform which of the following functions?

5. Which hand tool listed below is used to tighten a nut and bolt?

6. A hinge is most likely to be used on which of the following?

7. The primary function of a wire mesh screen is to

8. A four-foot by eight-foot sheet of plywood is cut into two pieces as shown above. What are the shapes of the two resulting pieces?

9.
The hand tool shown above is a

10. The primary function of a wire mesh screen is to

11. Which of the following mechanical devices is used to open a common soft drink can?

12. A bicycle wheel has a diameter of 1.9 feet and a circumference of 6 feet. A little girl rides this bicycle for two revolutions of this wheel. How far down the driveway does she travel?

13. Which of the following best describes the purpose of welding?

14. Which of the following groups of items listed below consists entirely of fastenersthat is, devices that are used to connect two items together?

15. A four-foot by eight-foot sheet of plywood is cut into two pieces as shown above. What are the shapes of the two resulting pieces?

16.
What mechanical device could be used to transfer water from tank #1 to tank #2?

17. Newton's First Law of physics says, ''A body (such as a car) that is in motion along a straight line will remain in motion, at the same speed, along the same straight line, unless acted upon by an outside force.' A car is traveling down a straight, flat road at 30 miles per hour. The operation of all but one of the items listed below can help demonstrate Newton's First Law. Which item CANNOT be used to demonstrate this Law?

18. An elevator is most similar to which of the following mechanical devices?

19. Which of the following groups of items listed below consists entirely of fastenersthat is, devices that are used to connect two items together?

20.
The C-clamp shown above would most likely be used to