Use and Care of Tools Flashcards
Eye and face protectors should be worn when using :
Chisels, punches and power tools
The type of material that should be worn for protection against heat, sparks, molten metal and welding radiation:
leather
Electrically operated power tools shall either be of the approved ___ type or properly ___
double-insulated + grounded
Only employees who have been __ in the operation of the particular tool in use shall be allowed to operate a powder-actuated tool
trained
A convenient tool for measuring the circumference of a pipe is
a tape rule
The accuracy of a level can be checked by placing it on a flat surface and noting the position of the ___
bubble
screw drivers are designed for
turning screws
Using a square-bladed screwdriver, it is found the screw cannot be turned. For further attempts to turn the screw it is recommended that
the screwdriver blade be turned with a wrench
The type of wrench best suited for the final tightening of a nut is
a box wrench if the amount of torque does not matter
a wrench designed for turning flare nuts of refrigeration tubing is called a ___ wrench
flare nut or split box
a machinists vice designed for holding tapered work is called
an adjustable jaw vise
a c-clamp should not be used without a
swivel
a machinists hammer that has one end of its head rounded into a ball shape is called a __ hammer
ball pein
a hammer with a head made of ___ metal should be used when working in an atmosphere containing flammable vapor
non-ferrous
Standard hacksaw blades are usually of the flexible type and are made of
carbon steel
A hand saw designed to cut across the grain of a piece of wood is called a ___ saw
crosscut
When a circular saw blade become pinched or twisted in a cut _ can occur
kickback
The four types of file teeth are:
single cut
double cut
rasp cut
curved tooth
A machinists flat file has a ___ cut teeth
double
For marking the location for drilling a hole, a ___ punch should be used
center
It is dangerous to use a cold chisel having a mushroomed head because
pieces of metal may fly off and cause injury
The type of wrench which should be used to turn a chrome-plate pipe is a __ wrench
strap
A chain wrench can be used to hold
round
square
hexagonal objects
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:
- use a pipe wrench of the proper size
- hammer on the fitting using a backup hammer or other suitable object
- apply heat to the fitting
When gripping a pipe with a pipe wrench, the wrench should be adjusted so that the pipe is
near the middle of the jaws
Why should a pipe cutter be used to cut a pipe instead of a hacksaw
So you can get a square cut
Which kind of wheel-type cutters is especially designed for use with power drives?
wide roll cutter
If a pipe reamer does not cut properly it should be sharpened or the ___ replaced
cone
The right-to-know law gives employees the right to learn about __ hazards in the workplace and how to work safely with these materials
chemical
A ___ reamer should never be used with power-driven equipment
spiral
Two methods of driving a geared threader are with the following:
- a ratchet handle
2. a power drive
A three-way pipe threader has dies and ____ for three sizes of pipes
built in guides
What are the two types of drop head ratchet threaders?
- exposed ratchet
2. enclosed ratchet
The part inside of a threader required to provide die travel and a positive feed is called the
lead screw
A ___ reamer must not be used with power operated pipe threading equipment
spiral
When changing dies, the __ should be placed so that their numbers agree with the die slot numbers on the die head
chasers
A pipe thread is cut to the proper length when the end of the pipe is __ with the edge of the dies
flush
The foot switch on power operated equipment should be ___ when not in use
locked
Two steps in annealing copper are
- heating
2. quenching
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:
file
deburring tool
reamer
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
45
37
Pipe which is to be butt-welded must have ___ end
beveled
The most desirable tool for gripping plastic pipe is
strap wrench
A __ wrench is used to tighten the bolts on a hubless coupling
torque
Cutting oil should be used to cool the drill when drilling a metal made of
steel
The __ on a portable electric drill allows continuous operation at maximum RPM
lock button
Drilling holes in concrete with a rotary hammer requires the use of a __ tip drill bit
carbide
Name the screw threads abbreviations: NC NF UNC UNF
National Coarse
National Fine
Unified Coarse
Unified fine
A tool used to cut external threads is called a
die
To complete the threaded at the bottom of a blind hole, a tap called a __ tap should be used
bottoming
Always use a ___ with grinding or cut-off wheels
Wheel guard
Mittens with____ must be worn when handling cables on drain cleaning machines
rivets
Cables on drain cleaning machines should be flushed with water after each use to prevent damaging effects of ____ compounds
drain cleaning
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
6
MAterial lifts and hoists should not be used as elevators for handling personal because they do not have required __ features
safety
