# Mid term ed ii

School of Engineering and Digital SciencesMid-Term test; weighting 20%Teaching team: A/Prof. Sherif A. GoudaMr. Dulat Karim-Engineering Dynamics IICourse Code MAE307Time allowed 120 min.15 min: for uploading answer sheet.Solve all the questions,The answer must be clear and neat. Students must write the measuring unit for theiranswer. Any missing unit will deduct 2 Mark,Students shall assume any missing data with reasonable assumptions.Question #1: Answer in your booklet the following questions (15 Marks)1- A shaft has an attached disc at the centre of its length. The disc has its centre of gravity locatedat a distance of 2 mm from the axis of the shaft. When the shaft is allowed to rotate at 300 rpm,it starts to vibrate. If the disc mass is 10 kg, how much force is responsible for the shaftvibration?a. Zerob. 10 kgc. 19.7 Nd. 10 N2- Gears are used toa.b.c.d.Increase the mechanical powerReduce the mechanical powerAll the aboveNone of the above3- Which gear set is used to convert rotary motion into translatory motion?a.b.c.d.Worm and worm gearSimple spur gear trainRack and pinionSimple helical gear train4- A spur gear has 50 number of … Purchase document to see full attachment

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