Question

11. Belt drives include all of these except() Rigid belt (a) Round (o-ring) belt (b) Flat belt belt (by Flat bel (c) Timing belt (e) Vee belt 12. Circular pitch units are measured in (a) square linear units per tooth (b) linear units per tooth (c) tooth divided by linear units (d) radians (unitless) (e) None of these 13. Types of gears include (a) Spur (b) Helical (c) Double Herringbone (d) Bevel (e) Hypoid (f) Worm (g) All of these (h) None of these 14. This engineer was /are involved in fatigue stress analysis: (a) R.R. Moore (b) Smith (c) Soderberg (d) Goodman (e) Miner (f) All of these (g) None of these 15.This component will handle axial forces in devices with rotary motion (a) Bushing (b) Ball Bearing (c) Needle Bearing (d) Thrust Bearing (e) All of these (f) None of these One point each: Identify as a method of attaching something to shaft (S) connecting a shaft to another shaft (C), or neither (N) (one point each) Woodruff Key Universal Joint 17. Square Key 18. O-Ring 19,--Rigid Coupling 20 1. Straight-Sided Spline Adhesive 25. Flexible Coupling 26 Set Screw 27,-- Involute Spline Press Fit Pinned

Answer 1

11. Answer is d)

There is nothing like rigid belt

12. Answer is b)

Circular pitch is given by πD / T, where D is diamter and T is number of teeth. So, unit is Linear units / tooth

13. Answer is g)

All the stated options are gears. Each gear can be used for different purposes.

14. Answer is f)

All these people provided different equations, means of testing and analysis of fatigue.

15. Answer is e)

Thrust bearing is specifically designed to take axial loads. Needle bearing and bushing can also take axial loads. Ball bearing can take radial as well as axial loads.

16. C. Used to connect shafts with inclined axes.

17. S. Used to connect shaft to another component such a gear, pulley.

18. S. O rings are commonly used on pump shafts to prevent leakage between the mating part.

19. C Used to connect two shafts when nearly solid connection is desired.

20. S. Used commonly when fitting inner race of bearing on shaft.

21. S. Used to connect component such as hub

22. C. Considering it as a pinned coupling, it connect two shafts. The connection between shaft and coupling is by means of a pin.

23. S. Connect other component to shaft such as pulley.

24. N. Adhesive is not used for rotating shafts.

25. C. Used to connect shafts while allowing misalignment.

26. S. Used to fix gear or pulley to shaft.

27. S. Used to connect component such as hub.

Hope it helps.