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Machine Kinematics Practice Test: Toothed Gearing & Gear Trains
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Toothed Gearing & Gear Trains topics include: Toothed gearing, gearing laws, gear trains and its types, spur gears, epicyclic gear trains torques, interference, contact path, standard proportions of gear system, bevel gears, worm and standard spur gears, reverted gears length of arc of a contact and its ratio. Toothed gears are used to transmit power and motion between shafts that rotate at a specific velocity ratio. They are also used as sliding gears for speed change mechanisms in gearboxes.  Here are some types of gears: Spur gears: These are cylindrical gears with teeth that are... Show more
Machine Kinematics Practice Test: Toothed Gearing & Gear Trains
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25 Questions

1. The maximum length of arc of contact for two mating gears, in order to avoid interference, is
2. Twenty degree full depth involute profiled 19-tooth pinion and 37-tooth gear are in mesh. If the module is 5 mm, the centre distance between the gear pair will be
3. In a gear train, when the axes of the shafts, over which the gears are mounted, move relative to a fixed axis, is called
4. The face width of the bevel gear is 0.3 times the radius of pitch cone. Here the bevel factor must be
5. When two non-intersecting and non-coplaner shafts are connected by gears,the arrangement is known as helical gearing.
6. In a gear having involute teeth, the normal to the involute is a tangent to the
7. The gears used for parallel shaft arrangement are
8. The face of the tooth is the
9. Which of the following is not the correct property of involute curve?
10. The gear used to convert rotary motion into translating motion is
11. When two spur gears having involute profiles on their teeth engage, the line of action is tangential to the
12. The product of the diametral pitch and module is equal to one.
13. If the centre distance of the mating gears having involute teeth is increased, then the pressure angle
14. An imaginary circle which by pure rolling action, gives the same motion as the actual gear, is called
15. The angular speed of the driven member is twice the driving member, if the input torque is 100 N-m,
Find the load torque magnitude in N-m.
16. A differential gear in an automobile is a
17. Lewis equation in spur gears is used to find the
18. The contact ratio is the ratio of
19. Bevel factor should not be less than
20. In a reverted gear train, two gears P and Q are meshing, Q-R is a compound gear, and R and S are meshing. The modules of P and R are 4 mm and 5 mm respectively. The numbers of teeth in P, Q and r are 20, 40 and 25 respectively. The number of teeth in S is
21. Bevel gears used for connecting intersecting shafts at 900 and having speed ratio 1 : 1 is known as
22. If b denotes the face width and L denotes the cone distance, then the bevel factor is written as
23. If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, the formative number of teeth is written as
24. The contact ratio for gears is
25. When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at right angle, then they are known as

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