Use and Care of Tools

Question 1

Eye and face protectors should be worn when using :

Answer 1

Chisels, punches and power tools

Question 2

The type of material that should be worn for protection against heat, sparks, molten metal and welding radiation:

Answer 2

leather

Question 3

Electrically operated power tools shall either be of the approved ___ type or properly ___

Answer 3

double-insulated + grounded

Question 4

Only employees who have been __ in the operation of the particular tool in use shall be allowed to operate a powder-actuated tool

Answer 4

trained

Question 5

A convenient tool for measuring the circumference of a pipe is

Answer 5

a tape rule

Question 6

The accuracy of a level can be checked by placing it on a flat surface and noting the position of the ___

Answer 6

bubble

Question 7

screw drivers are designed for

Answer 7

turning screws

Question 8

Using a square-bladed screwdriver, it is found the screw cannot be turned. For further attempts to turn the screw it is recommended that

Answer 8

the screwdriver blade be turned with a wrench

Question 9

The type of wrench best suited for the final tightening of a nut is

Answer 9

a box wrench if the amount of torque does not matter

Question 10

a wrench designed for turning flare nuts of refrigeration tubing is called a ___ wrench

Answer 10

flare nut or split box

Question 11

a machinists vice designed for holding tapered work is called

Answer 11

an adjustable jaw vise

Question 12

a c-clamp should not be used without a

Answer 12

swivel

Question 13

a machinists hammer that has one end of its head rounded into a ball shape is called a __ hammer

Answer 13

ball pein

Question 14

a hammer with a head made of ___ metal should be used when working in an atmosphere containing flammable vapor

Answer 14

non-ferrous

Question 15

Standard hacksaw blades are usually of the flexible type and are made of

Answer 15

carbon steel

Question 16

A hand saw designed to cut across the grain of a piece of wood is called a ___ saw

Answer 16

crosscut

Question 17

When a circular saw blade become pinched or twisted in a cut _ can occur

Answer 17

kickback

Question 18

The four types of file teeth are:

Answer 18

single cut
double cut
rasp cut
curved tooth

Question 19

A machinists flat file has a ___ cut teeth

Answer 19

double

Question 20

For marking the location for drilling a hole, a ___ punch should be used

Answer 20

center

Question 21

It is dangerous to use a cold chisel having a mushroomed head because

Answer 21

pieces of metal may fly off and cause injury

Question 22

The type of wrench which should be used to turn a chrome-plate pipe is a __ wrench

Answer 22

strap

Question 23

A chain wrench can be used to hold

Answer 23

round
square
hexagonal objects

Question 24

It is necessary to remove a length of pipe that is screwed into a tee, but the section of pipe cannot be loosened. 3 recommended methods for removing the pipe are:

Answer 24

1. use a pipe wrench of the proper size
2. hammer on the fitting using a backup hammer or other suitable object
3. apply heat to the fitting

Question 25

When gripping a pipe with a pipe wrench, the wrench should be adjusted so that the pipe is

Answer 25

near the middle of the jaws

Question 26

Why should a pipe cutter be used to cut a pipe instead of a hacksaw

Answer 26

So you can get a square cut

Question 27

Which kind of wheel-type cutters is especially designed for use with power drives?

Answer 27

wide roll cutter

Question 28

If a pipe reamer does not cut properly it should be sharpened or the ___ replaced

Answer 28

cone

Question 29

The right-to-know law gives employees the right to learn about __ hazards in the workplace and how to work safely with these materials

Answer 29

chemical

Question 30

A ___ reamer should never be used with power-driven equipment

Answer 30

spiral

Question 31

Two methods of driving a geared threader are with the following:

Answer 31

1. a ratchet handle | 2. a power drive

Question 32

A three-way pipe threader has dies and ____ for three sizes of pipes

Answer 32

built in guides

Question 33

What are the two types of drop head ratchet threaders?

Answer 33

1. exposed ratchet | 2. enclosed ratchet

Question 34

The part inside of a threader required to provide die travel and a positive feed is called the

Answer 34

lead screw

Question 35

A ___ reamer must not be used with power operated pipe threading equipment

Answer 35

spiral

Question 36

When changing dies, the __ should be placed so that their numbers agree with the die slot numbers on the die head

Answer 36

chasers

Question 37

A pipe thread is cut to the proper length when the end of the pipe is __ with the edge of the dies

Answer 37

flush

Question 38

The foot switch on power operated equipment should be ___ when not in use

Answer 38

locked

Question 39

Two steps in annealing copper are

Answer 39

1. heating | 2. quenching

Question 40

After a tube is cut with a roller-type cutter, tools which could be used to remove the burr from the inside of the tube are:

Answer 40

file deburring tool reamer

Question 41

Flared fittings used in refrigeration, plumbing and some industrial work have their ends sloped at an angle of ___ degrees, while those used in aircraft and other industrial work have a __ degree angle

Answer 41

45 | 37

Question 42

Pipe which is to be butt-welded must have ___ end

Answer 42

beveled

Question 43

The most desirable tool for gripping plastic pipe is

Answer 43

strap wrench

Question 44

A __ wrench is used to tighten the bolts on a hubless coupling

Answer 44

torque

Question 45

Cutting oil should be used to cool the drill when drilling a metal made of

Answer 45

steel

Question 46

The __ on a portable electric drill allows continuous operation at maximum RPM

Answer 46

lock button

Question 47

Drilling holes in concrete with a rotary hammer requires the use of a __ tip drill bit

Answer 47

carbide

Question 48

``` Name the screw threads abbreviations: NC NF UNC UNF ```

Answer 48

National Coarse National Fine Unified Coarse Unified fine

Question 49

A tool used to cut external threads is called a

Answer 49

die

Question 50

To complete the threaded at the bottom of a blind hole, a tap called a __ tap should be used

Answer 50

bottoming

Question 51

Always use a ___ with grinding or cut-off wheels

Answer 51

Wheel guard

Question 52

Mittens with____ must be worn when handling cables on drain cleaning machines

Answer 52

rivets

Question 53

Cables on drain cleaning machines should be flushed with water after each use to prevent damaging effects of ____ compounds

Answer 53

drain cleaning

Question 54

An extension ladder is to be used by leaning it against a building wall. If the working length of the ladder is 24 feet, the proper distance to place the base of the ladder away from the building wall is __ feet

Answer 54

6

Question 55

MAterial lifts and hoists should not be used as elevators for handling personal because they do not have required __ features

Answer 55

safety