Objective Questions 437
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d:\N-Design\Des22-1.pm5
CHAPTER 11
1. Welding produces a __ joint.
(a) Temporary (b)Permanent
2. A circle at the elbow of the welding symbol indicates __.
3. Welding on site is indicated by __ at the elbow.
4. In the process of welding, SAW stands for _____.
5. Welding symbol on the continuous line represents _.
6. Welding symbol placed on the dashed line represents _.
7. Length of the weld is indicated on the __ side of the weld symbol.
8. __ is the welding symbol with machining finish.
9. Welding symbol with grinding finish is represented by __.
10. __ is the welding process designation for oxy-acetylene welding.
11. Carbon arc welding is represented by __.
12. If a weld is to have a flat finish, __ should be added above the symbol.
CHAPTER 12
1. Journal bearings can support only .
(a) axial loads (b) radial loads (c) inclined loads
2. Thrust bearings are mainly used to resist radial loads (True/False).
3. A pivot bearing is used for horizontal shafts (True/False).
4. A collar thrust bearing is generally used on horizontal shafts (True/False).
5. Bearings are classified into __ and __ categories.
6. In a journal bearing, the load is in __ direction to the shaft axis.
7. __ bearing is used for long shafts requiring intermediate support.
8. Snug is provided to the brasses to prevent __.
9. Hangers are used to support line shafts (True/False).
10. ____ bearing supports a shaft running parallel to a wall.
11. The size of the wall bracket depends on the biggest size of the pulley mounted on the shaft
(True/False).
12. The size of the pillar bracket depends on the size of the pulley mounted on the shaft (True/
False).
13. Ball bearings are used to resist axial loads on shafts (True/False).
14. Roller bearings are used to resist normal loads acting on shafts (True/False).
15. The bearing designation 308 represents _.
16. Locking washer is used to prevent the __ movement of the bearing.
CHAPTER13
1. Chains are positive drive machine elements (True/False).
2. Gears are positive drive power transmission machine elements (True/False).
3. _____ chains are used for bicycles.
4. Inverted tooth chains are also called silent chains (True/False).
5. The distance between the centres of the articulating joints is called _____.
6. Smaller sprockets are known as _____.
