self test 2

1.

1 point

To prevent the workpeice from moving while being drilled on a drill press, you must secure it to which of the following?

column

table

depth stop

spindle

2.

1 point

How many systems are used to indicate twist drill bit diameters?

4

3

2

5

3.

1 point

What does a variable speed switch allow the drill operator to control?

direction of rotation

size of hole

depth of penetration

RPM

4.

1 point

What will happen if the feed pressure in a drilling operation is too light?

wool will break

cut will be rough

cutting edges will burn

tool will jam

5.

1 point

What part of a twist drill bit contains the spiral grooves?

shank

twist

body

point

6.

1 point

Which of the following is true of a 350-mm (14-in.) drill press?

drills holes 175 mm (7 in.) deep

measures 175 mm (7 in.) from the centre of the spindle to the front of the column

measures 350 mm (14 in.) from the centre of the spindle to the front of the column

drills holes 350 mm (14 in.) in diameter

7.

1 point

What is the name of the movable sleeve on a drill press that houses the spindle and it's bearings?

quill

column

turret

guide tube

8.

1 point

The drill motor switch must NOT be locked in the ON position if there is a risk of which one of the following?

excessive clearance

flying spraks

jamming

a power failure

9.

1 point

Which of the following is recommended to be used to prevent excess friction when drilling aluminium?

soluble oil

water

tallow

specialty lubricant

10.

1 point

The rotation of a drill motor should only be reversed under which of one of the following circumstances?

drill is unplugged

motor has stopped turning

full speed has been reached

drill switch is turned off

11.

1 point

You should wear approved eye protection during drilling operations as a safeguard against which of the following hazards?

chips

sparks

fumes

dust

12.

1 point

Which of the following drills has the lowest RPM?

1/4-inch drills

drills with forward-reverse switches

1/2-inch drills

3/8-inch drills

13.

1 point

What is the name of the entire working unit on the upper end of a drill press?

column

head

quill

spindle

14.

1 point

What should be done to cool the drill bit and prevent excess friction while drilling?

apply a cutting fluid while drilling

apply powder to the metal to be drilled

dip the drill bit in oil

dip the drill bit in potable water

15.

1 point

What is the name of the device used to tighten the drill chuck?

Allen key

chuck key

chuck wrench

drill wrench

16.

1 point

What causes the cutting edge of a twist drill bit to chip or break during drilling operations?

drill's speed is set too high

too little lip clearance

bit is over heated

material is being fed too fast

17.

1 point

What part of the twist drill bit fits into the chuck?

shank

body

point

shaft

18.

1 point

What is the main purpose of the coolants used in drilling operations?

minimize burn hazard to operator

preserve cutting edge of drill bit

wash away metal shavings

increase cutting speed

19.

1 point

The drill speed should be increased if the workpeice is made of which of the following materials?

ferrous metal

soft metal

masonry materials

very hard metal