315

Question 1

Iron parts are usually made from

Answer 1

Castings

Question 2

What do the last two digits of the SAE steel code indicate?

Answer 2

Percentage of carbon

Question 3

The ability of a steel to resist cutting and scratching is called

Answer 3

Hardness

Question 4

The process that eliminates brittleness in a steel is

Answer 4

Tempering

Question 5

To remove cast iron chips safely from a machine, you should use (a)

Answer 5

Brush

Question 6

What tool should you use to lay out and measure distances?

Answer 6

Dividers

Question 7

To prevent cast iron surface plates from rusting, coat them lightly with

Answer 7

Oil

Question 8

To raise a surface gauge for measuring above its height, support it on (a)

Answer 8

Box parallels

Question 9

The distance between the centers of two adjacent holes on a bolt circle is the

Answer 9

Chord or pitch chord

Question 10

You should carry pointed tools in a tote box or in a

Answer 10

Pouch fastened to your belt

Question 11

The part of a lathe that holds the dead center is called the

Answer 11

Tailstock

Question 12

To remove a live center from a lathe, you should tap it with a

Answer 12

Knockout bar

Question 13

For boring operations on a lathe, you should hold the workplece in a

Answer 13

Chuck

Question 14

What should you use to remove a chuck that screws on a lathe spindle?

Answer 14

Block of wood

Question 15

To mount a workpiece on a machine table, you should hold it in a

Answer 15

Vise

Question 16

A view showing a portion of a part cut away is a

Answer 16

Section

Question 17

The two dimensions of a cylinder are its and its

Answer 17

Diameter….. length

Question 18

A name for the degree of accuracy needed for a part to function is

Answer 18

Precision

Question 19

The index line of a micrometer is divided into 40 parts per inch. Each turn of the micrometer thimble moves the spindle

Answer 19

0.025 in

Question 20

What does a toolmaker use to check the accuracy of gauges?

Answer 20

Gauge blocks

Question 21

When you grind the end of a high-speed steel tool, the steel

Answer 21

gives of dark red sparks

Question 22

The surface of the tool shank that supports the cutting tip is the

Answer 22

Base

Question 23

The proper surface of a wheel to use for grinding high-speed steel tools is the

Answer 23

Face

Question 24

What does the A represent in a grinding wheel code marked A 60 N 10 V W?

Answer 24

Type of abrasive

Question 25

The process of cleaning up an uneven edge formed by grinding is called

Answer 25

Honing

Question 26

The metal column that separates the flutes of a drill is called the

Answer 26

Web

Question 27

The points of most general purpose twist drills have an included angle of degrees

Answer 27

118

Question 28

A flaring cup grinding wheel produces a relief that is

Answer 28

Flat

Question 29

Machine countersinks have an included angle of to degrees

Answer 29

60…. 82

Question 30

To remove burrs in a machine spindle, you should use a(n) reamer.

Answer 30

Tapered