1) which one is a ratchet and pawl? a) b) c) d) 2) which one is a lever? a) b) c) d) 3) which one is a linkage a) b) c) d) 4) which one is a cam and follower? a) b) c) d) 5) which one is a crank and slider? a) b) c) d) 6) which one is a spring? a) b) c) d) 7) which one is a crank and crankshaft? a) b) c) d) 8) which one is gears? a) b) c) d) 9) which one is a scissor lift? a) b) c) d) 10) which one is a compound gear? a) b) c) d) 11) which one is a worm gear? a) b) c) d) 12) which one is a bevel gear? a) b) c) d) 13) which one is a rack and pinion? a) b) c) d) 14) which one is a chain and sprocket? a) b) c) d) 15) what is a lever used for? a) b) c) d) 16) how does a lever work? a) lifting the load witha lever is easier becaus yu only need a small amount of effort b) it is a slide for balancing things c) it is used to puh things along the ground d) levers make life easier by giving a mechanical advantage 17) what are linkages used in? a) b) c) d) 18) how do linkages work a) A linkage is a mechanism made by connecting levers together.Linkages change the direction of motion b) linages are make up of levers that all push in the same direction c) levers are used in pinball droppers 19) what is a ratchet and pawl used for? a) (fishing reel) b) c) 20) how does a ratchet and pawl work? a) Ratchets are used to allow a wheel to turn in one direction only and to prevent it from slipping backwards. b) they are used to help move something in one direction c) they are used in string lamps 21) where are cams and followers used in irl? a) b) c) d) 22) how does a cam and follower work? a) Cams are mechanisms that change one type of motion into another.Usually cams change rotary motion in linear motion. b) cams are used to swing something sideways c) cams and followers generlly convert motion into a faster version 23) how does a crank and slider work? a) the crank converts linear motion into oscillating motion b) the rotation of the crank drives the linear motion of the slider c) a crank and slider is used to translate slow movement into faster movement 24) what is a crank and slider used for a) b) c) 25) how does a spring work a) it translates downward force into upward force and vice versa b) its makes things move in circles c) it converts linear motion into oscillating motion 26) where are springs used irl a) b) c) 27) how do cranks and crankshafts work a) The crank acts like a continuous lever, increasing mechanical advantage. b) it works like a pulley and helps lift things with ease c) it makes life easier by helping yu eat 28) where in real life are cranks and crankshafts used a) b) c) 29) what are gears used for a) b) c) 30) how do gears work a) Gears can be used to change the direction and speed of something. b) gears are used to translate linear into oscillating c) gears are used in crankshafts 31) how does a scissor lift work? a) Uses hydraulic cylinders and an air compressor to actuate the scissor lifting mechanism. As the cylinder extends, the scissor arm is pushed upwards raising the platform b) it work like a likage, directing one motion and turning it into another c) your mom 32) what are scissor lifts used for irl? a) b) c) 33) how do compound gears work a) These are two or more gears attached together and rotating around the one centre. they will rotate at the same seed and in the same direction b) they rotate differently enabling the use of less gears. c) they help with seesaws and executions 34) what is an example of a compound gear's use irl? a) b) c) 35) what is a worm gear? a) This is a gear system that changes the direction of rotation through 90 degrees b) this just gives people harpies c) this makes the rotational movement into oscillating movement 36) where are worm gears used in real life a) b) c) 37) what are bevel gears a) This is a gear system that changes the direction of rotation through 90 degrees b) it is an old writing system c) it is like a lever and helps lift things up by easing the effort 38) where are bevel gears used irl a) b) c) 39) what is a rack and pinion a) The pinion rotates and moves the rack in a straight line.it turns rotary motion into linear motion b) it turns linear into oscillating c) its a ratchet and pawl 40) where are racks and pinions used irl? a) b) c) 41) what is a chain and sprocket a) As the sprocket spins, the teeth grab onto the chain and move other parts that interlock with the chain. b) it wrks like gears and turns everything c) yur m0m 42) where are chains and sprockets used a) b) c)

engineering mechanisms

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？