438 Machine Drawing
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d:\N-Design\Des22-1.pm5
7. The chain consists of integer number of pitches with _____ number preferably.
(a) Odd (b) Even
8. Gears are used for power transmission from one shaft to another, when the centre distance
between them is _____.
(a) small (b) large
9. A module is always expressed in _____.
(a) mm (b) cm
10. Helical gears are used to connect _____ shafts.
(a) Non-parallel (b) Parallel
11. A herring bone gear is a _____ gear.
12. The rack and pinion arrangement is used to transform rotary motion into translatory
motion but not vice versa (True/False).
13. The addendum is equal to module in spur gears (True/False).
14. Worm gearing is used for speed reducers (True/False).
15. _____ gearing is suitable for two shafts at 90°.
CHAPTER 14
1. A fixture is used to guide the tool (True/False).
2. A jig is used to guide the tool (True/False).
3. A workpiece is represented in lines in jig or fixture drawing.
4. In jigs and fixtures drawing, workpiece is considered as transparent (True/False).
5. Workpiece location should prevent _____ degrees of motion.
(a) 6 (b) 3 (c) 4
6. The inside diameter of a drill bush is ground to a running fit _____.
7. The outside diameter of a drill bush with press fit is _____.
(a) p6 (b) h6 (c) f6
8. _____ are provided to the fixture to locate it with respect to machine axis.
9. _____ weight is provided on a turning fixture base.
10. To set the cutter, _____ block is provided on milling fixtures.
CHAPTER 15
1. The extreme permissible size for any dimension of a part is _____.
(a) limit (b) nominal size (c) tolerance
2. Tolerance is denoted by number symbol followed by a letter symbol (True/False).
3. Fundamental tolerances are given for letter symbols (True/False).
4. Upper deviation for hole is indicated as EI (True/False).
5. ES stands for E’cart _____.
6. EI stands for E’cart _____.
7. The algebraic difference between the maximum limit and nominal size is known as
_____.
(a) Deviation (b) Upper deviation (c) allowance
8. The grade of tolerance obtained by centre lathe turning is _____.
9. Honing produces the tolerance grade of _____.
(a) 10 (b) 15 (c) 6 (d) 0
