Millwright Level 1 Final Exam 2023 with complete solution

Millwright Level 1 Final Exam 2023 with complete solution @STUVATE- STUVIA On a pedestal grinder, the gap between the grinding wheel and work rest should not exceed: - 1/8 inch The kind of abrasive material used in grinding wheels for general purpose applications is: - aluminum oxide A blotter is used on a grinding wheel to: - 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: - 1/3 the diameter of the wheel The best wheel to use for cleaning scale and dirt off a workpiece is the: - wire wheel What is a natural abrasive? - made of natural material rather than synthetic Under properties of abrasives, to what does the term hardness refer? - ability of a material to scratch or penetrate another material The ____ is the part of the wheel that holds the grains together - bond Markings for the wheel identification can be found on the _______ - Blotter What is the recommended speed to run a grinding wheel? - Never run it faster that the max RPM of the grinding wheel How should you start a grinder? - Stand off to the side and wait a full minute Is 46 or 60 the coarser grit? - 46 What are the 2 most commonly used abrasive materials? - Aluminum oxide and silicone carbide For what purpose is the diamond dresser used? - When a very fine finish is required What is the purpose of ring test? - to check for cracks If a grinding wheel makes a ringing sound what does that mean? - wheel is not cracked What is the purpose of truing a grinding wheel? - Restores the shape of the wheel and makes the outer surface of the wheel concentric with its bore An out of balance wheel: - vibrates Belt grinders are useful for: - quickly deburring and chamfering a workpiece What is the purpose of a GFCI? - Senses drop in current and switches power off The kind of abrasive material use in grinding wheels for general purpose application is: - aluminum oxide Is it safe to carry a portable grinder by the power cord? - False Is it safe to use standard sockets with electric impact wrenches - False The larger the power drill, the slower the RPMs and the higher the torque - True Can you use conventional drill bits with a hammer drill? Why or why not? - Yes of the hammer drill has a switch to turn off hammer action Most cordless drills have torque control - True Prolonged use of power or air tools can cause carpal tunnel sydrome - True Is it safe to run an impact wrench with a universal joint and socket attached - No because it may throw off attachments What conditions would you use a GFCI - Wet conditions What 3 things does a GFCI protect: - 1. Overload 2. Overcurrent 3. Ground fault protection A GFCI prevents all electrical shocks - False Higher voltage on a battery means: - Greater power of tool What type of power load must be used in the low velocity tool? Why? - 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: - 1. Grey 2. Brown 3. Green 4. Yellow 5. Red 6. Purple Power loads should not be carried loosely in pockets or aprons. Why? - Could be set off causing serious injury or death Fasteners used in explosive actuated tools are: - Manufactured from special steel and tempered A drive pin is a fastener used to: - Permanently attach one material to another What is base material? - 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: - 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: