- Me300 21441 14422020 20216 Mid Term Examination 20 Marks Clos 1012 Pts Question 1 In A Seur Drive Module Is Equal 1 (36.01 KiB) Viewed 34 times
- Me300 21441 14422020 20216 Mid Term Examination 20 Marks Clos 1012 Pts Question 1 In A Seur Drive Module Is Equal 2 (45.4 KiB) Viewed 34 times
- Me300 21441 14422020 20216 Mid Term Examination 20 Marks Clos 1012 Pts Question 1 In A Seur Drive Module Is Equal 3 (39.17 KiB) Viewed 34 times
- Me300 21441 14422020 20216 Mid Term Examination 20 Marks Clos 1012 Pts Question 1 In A Seur Drive Module Is Equal 4 (38.64 KiB) Viewed 34 times
Mid-Term Examination ME 309 21441/1442- 2020/2021 QUESTION 6 1. Idler gears are used for....... obtaining rotation in desired direction chreducing the size of the individual goat c. bridging the gap between the first and last wie af the train any of the above QUESTION Z 1. The use of bevel and helical gears in general results in....... Fruet maintenance excessive friction in castal loading which complicates bearing and housing any of the above QUESTIONS 1. For slower speed applications and to ensure smooth drive, one can privilege a. Bevel gears b. Werm gears Spur gears cd None of above QUESTION 9 1. Which of the following is not true about worm gear? Needs maintenance b. No back driving transmittore at right angles Noisy QUESTION 10 1. If the module of a gear bem, the number of teeth T and pitch circle diameter 1, then be b D/ Det/m C me/27 MECHANICS OF MACHINES Page 3
Mid-Term Examination ME 300 201241/14H2020/20216 QUESTION 11 1. The teeth of the belical gears are cut parallel to the shaft axis. TRUE FALSE QUESTION 12 1. Which of the following type of gears are free from axial thrust sparar c Bevel Worman Hellca CLOS 48 PTS) QUESTION 13 1. If the small gear on the right has an RPM of 234 what will the RPM or the last year on the left be? 12T, 60T. 36T gears shown 10 UM 16 O'M 215 RPM d220 RPM QUESTION 14 1. Examine the image of the gear combination and determine the end ratio. Express this ratio as a single number. Gears shown are 12T, 247.60T, 84T. 10 b 24 70 MECHANICS OF MACHINES Page 4
Mid-Term Examination ME 309 2nd, 1441/1442H (2020/2021G) QUESTION 15 1. If the velocity ratio for an open belt drive is 8 and the speed of driving pulley is 800 r.p.m, then considering a slip of 2%, the speed of the driven pulley is: a. 10.04 RPM b. 102.04 RPM C. 100.04 RPM с d. 98.04 RPM QUESTION 16 1. If the angle of wrap on smaller pulley of diameter 250 mm is 120 and diameter of larger pulley is twice the diameter of smaller pulley, then the center distance between the pulleys for an open belt drive is: a. 1000 mm b. 700 mm C C 500 mm Cd. 250mm