MSSC manufacturing final study guide Questions With Complete Answers!!

_________ is a reddish, malleable metal that conducts electricity well and resists weathering. - Steel - Cast iron - Aluminum - Copper - ANSWERCopper The mechanical advantage of a third-class lever can be found by the ratio of the length of the __________ arm divided by the length of the __________ arm. - Resistance, effort - Effort, resistance - Resistance, fulcrum - Effort, fulcrum - ANSWEREffort, resistance A spring scale is used to measure __________. - Force - Mass - Torque - Rotary moment - ANSWER- Force A pair of ice tongs is an example of a __________ lever. - Third-class - Fourth-class - First-class - Second-class - ANSWERThird-class A first class lever can move greater forces if __________. - The effort arm is shortened and the resistance arm is lengthened - The effort arm is lengthened and the resistance arm is shortened - Both the effort and resistance arms are lengthened - Both the effort and resistance arms are shortened - ANSWER- The effort arm is lengthened and the resistance arm is shortened Levers are classified as __________. - Class A, Class B, or Class C - Low grade, Medium grade, or High Grade - Inclined, declined, or equilateral - First class, Second class, or Third class - ANSWERFirst class, Second class, or Third class A __________ is a bar or beam atop a fulcrum that is used to transmit force from one point to another.- Wheel- Widget- Inclined plane- Lever - ANSWERLever A third-class lever has its __________. - Effort arm between the fulcrum and the load - Fulcrum between the effort arm and the load - Load between the fulcrum and the effort arm - Effort arm directly on top of the fulcrum - ANSWEREffort arm between the fulcrum and the load The English unit of measurement of weight is the __________. - Pound-mass (lb-m) - Foot-pound (ft-lb) - Pound-force (lb-f) - Inch-pound (in-lb) - ANSWERPound-force (lb-f) The metric system expresses force in __________. - Lb-f - Newtons - Newtons per gram - Pounds - ANSWERNewtons A(n) __________ is produced when the forces applied to a lever cause it to rotate. - Rotary impact - Rotational moment - Datum - Inclined plane - ANSWERRotational moment A mechanism refers to __________. - Machine components only - Only components with a drive system - Both parts and a complete machine - Only a complete machine - ANSWERBoth parts and a complete machine A wheelbarrow is an example of a __________ lever. - First-class - Second-class - Third-class - Fourth-class - ANSWERSecond-class Torque is calculated by multiplying a force times __________. - A distance - The diameter of the load - The load's mass - The circumference - ANSWERA distance Mechanical advantage is the ratio of the force required to move a load divided by __________. - The weight of the load - The mass of the load - The diameter of the fulcrum - The effort force applied - ANSWERThe effort force applied A force that makes an object rotate about a point is called __________. - Torque - Leverage - Pivot force - Fulcrum - ANSWERTorque The mechanical advantage of a first-class lever can be found by the ratio of the length of the __________ arm divided by the length of the __________ arm. - Resistance, effort - Effort, resistance - Resistance, fulcrum - Effort, fulcrum - ANSWEREffort, resistance Which of the following is one of the six mechanism safety rules? - Use your left hand to operate the motor switch. - Remove the back cover of the panel. - Keep your work area safe and clean. - Do not remove the fuse cover. - ANSWERKeep your work area safe and clean A second-class lever has its __________. - Effort arm between the fulcrum and the load - Fulcrum between the effort arm