Millwright Level 1| Questions & 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 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 streng