Millwright Level 1 Exam Questions and Answers (Graded A+).

Millwright Level 1 Exam Questions and Answers (Graded A+). On a pedestal grinder, the gap between the grinding wheel and work rest should not exceed: - ANSWER 1/8 inch The kind of abrasive material used in grinding wheels for general purpose applications is: - ANSWER aluminum oxide A blotter is used on a grinding wheel to: - ANSWER protect the flanges from the abrasize grit, display information about the wheel and compensate for the uneven surfaces on the wheel Flanges should at least be: - ANSWER 1/3 the diameter of the wheel The best wheel to use for cleaning scale and dirt off a workpiece is the: - ANSWER wire wheel What is a natural abrasive? - ANSWER made of natural material rather than synthetic Under properties of abrasives, to what does the term hardness refer? - ANSWER ability of a material to scratch or penetrate another material The ____ is the part of the wheel that holds the grains together - ANSWER bond Markings for the wheel identification can be found on the _______ - ANSWER Blotter What is the recommended speed to run a grinding wheel? - ANSWER Never run it faster that the max RPM of the grinding wheel How should you start a grinder? - ANSWER Stand off to the side and wait a full minute Is 46 or 60 the coarser grit? - ANSWER 46 What are the 2 most commonly used abrasive materials? - ANSWER Aluminum oxide and silicone carbide For what purpose is the diamond dresser used? - ANSWER When a very fine finish is required What is the purpose of ring test? - ANSWER to check for cracks Millwright Level 1 Exam Questions and Answers (Graded A+). If a grinding wheel makes a ringing sound what does that mean? - ANSWER wheel is not cracked What is the purpose of truing a grinding wheel? - ANSWER Restores the shape of the wheel and makes the outer surface of the wheel concentric with its bore An out of balance wheel: - ANSWER vibrates Belt grinders are useful for: - ANSWER quickly deburring and chamfering a workpiece What is the purpose of a GFCI? - ANSWER Senses drop in current and switches power off The kind of abrasive material use in grinding wheels for general purpose application is: - ANSWER aluminum oxide Is it safe to carry a portable grinder by the power cord? - ANSWER False Is it safe to use standard sockets with electric impact wrenches - ANSWER False The larger the power drill, the slower the RPMs and the higher the torque - ANSWER True Can you use conventional drill bits with a hammer drill? Why or why not? - ANSWER Yes of the hammer drill has a switch to turn off hammer action Most cordless drills have torque control - ANSWER True Prolonged use of power or air tools can cause carpal tunnel sydrome - ANSWER True Is it safe to run an impact wrench with a universal joint and socket attached - ANSWER No because it may throw off attachments What conditions would you use a GFCI - ANSWER Wet conditions What 3 things does a GFCI protect: - ANSWER 1. Overload 2. Overcurrent 3. Ground fault protection A GFCI prevents all electrical shocks - ANSWER False Higher voltage on a battery means: - ANSWER Greater power of tool What type of power load must be used in the low velocity tool? Why? - ANSWER Power load with a crimped end must be used cause high power load would get lodged in the tool 6 colours ranging from lowest strength to highest strength for power load are: - ANSWER 1. Grey 2. Brown 3. Green 4. Yellow 5. Red 6. Purple Power loads should not be carried loosely in pockets or aprons. Why? - ANSWER Could be set off causing serious injury or death Fasteners used in explosive actuated tools are: - ANSWER Manufactured from special steel and tempered A drive pin is a fastener used to: - ANSWER Permanently attach one material to another What is base material? - ANSWER Material which the fastener shank is driven into To determine the sustainability of a base material, use a fastener as a centre punch struck by a single average hammer blow. If the fastener is blunted ( meaning it can't fasten) the material is too: - ANSWER Hard To determine the sustainability of a base material, use a fastener as a centre punch struck by a single average hammer blow. If the fastener penetrates easily, do not fasten because the material is too: - ANSWER Soft To determine the sustainability of a base material, use a fastener as a centre punch struck by a single average hammer blow. If the material cracks or shatters, do not fasten because the material is too: - ANSWER Brittle A threaded knurled pin is designed for what material - ANSWER Mild steel To be a qualified operator of an explosive actuated tool you must posses: - ANSWER training in the use of each tool and familiarity with local safety regulations OH&S states that operators of explosive actuate tools should always wear: - ANSWER Eye protection If a tool is found to be defective, you should: - ANSWER Mark it defective and call a service representative According to OH&S, what safety equipment is required when using an explosive actuate tool in a confined area such as a small room? - ANSWER ear plugs and eye protection Who is responsible if an accident occurs as a result of an unattended explosive actuated tool? - ANSWER The operator Should an explosive actuated tool be used in explosive or flammable area? - ANSWER No How often should an explosive actuated tool be cleaned under normal working conditions? - ANSWER It should be cleaned daily or when it becomes sluggish How much oil should be added to the tool parts after cleaning? - ANSWER None What part requires replacement most often in a low velocity tool? - ANSWER Buffer With a low velocity tool, what is a general rule of thumb for the placement and depth of fasteners in steel? - ANSWER 1/2" from the edge, 2" apart and 1/4" deep Do not fasten near welds with a low velocity tool because the steel may have been hardened making the metal brittle - ANSWER True .