FEB 2017

FITTER THEORY
SEMESTER - III

PART-1

1. Which one is not part of

centre lathe?

a)  Saddle 

b)  Feed rod

c)  Arber

d)  Lead screw

Answer:- c)  Arber

2. Lower Critical Temperature

of High carbon Sieel while

hardening-
a)  560 °C

b)  723 °C

c)  850 °c

d)  960 °C

Answer:- b)  723 °C

3. The sliding surface of lathe

bed are -

a. Flame hardened

c. Normalized

b. Case hardened

d. Tempered

Answer:- a. Flame hardened

4. Advantages of four Jaw

Chuck are -

a. Irregular work pieces can be

     held easily

b. It has more gripping power

c. Large diameter can be held

by reversing jaw

d.  All of these

Answer:- a. Irregular work pieces can be

     held easily

5. The internal part of the shaft

of bearing is called

a. Journal

b. Cage

c. Outer Race

d. Inner race

Answer:- a. Journal

6. Bearing suitable for heavy

   radial load-

a. Thrust bearing

b. Self-Aligning ball Bearing

c. Ball Bearing

d. Roller Bearing

Answer:- b. Self-Aligning ball Bearing

7. Bearing assembled in two

parts in special plumber block-

a. Adjustable Slide Bearing

b. Solid Bearing

c.   Split Bearing

d. Self-Aligning

Ball Bearing

Answer:- c.   Split Bearing

8. Bearings are used for- -

a. To move shaft freely

b. To support shaft in a fixed

    position

c.  To guide shaft

d) All of these

Answer:- d) All of these

9. The material for Indenter of

 mechanical surface measuring

machine-
a. Cast Steel

b. Diamond

c. Carbide

d. Tool Steel

Answer:- b. Diamond

10. Which one of the following

tool angle is provided to avoid

 rubbing of the body of the tool

with the work piece?

a. Rake angle

b. Helix angle

c. Clearance angle

d. None of these

Answer:- c. Clearance angle

11. Pattern made by the movement

of Cutting tool on the Work Surface

 is called-
a. Roughness

b. Smoothness

c. Waviness
d. Surface Texture

Answer:- d. Surface Texture

12. Abrasive used for lapping

of Gauges- Alurninium Oxide

a. Boron carbide

b. Silicon carbide

c. Aluminium Oxide

d. Diamond

Answer:- a. Boron carbide

13. The movement of Honing

machine while honing is ...

a. Vertical

b. Reciprocating

c. Vertical and Reciprocating

d. Horizontal

Answer:- c. Vertical and Reciprocating

14. In which metallic coating,

chromium powder is used-

a. Cladding

b. Sherardising

c. Calorising

d. Chromising

Answer:- d. Chromising

15. Hard abrasive for lapping is-

a. Diamond

b. Boron carbide

c. Silicon Carbide

d. Aluminium Oxide

Answer:- a. Diamond

16. Which one of the following governs

the selection of feed when

turning on work piece?

a. Tool geometry

b. Surface finish required

c. Type of coolant required

d. All of these

Answer:- a. Tool geometry

17. Centred drilling should be done at -

a. Higher rpm with a slower feed

b. Higher rprn with a higher feed

c. Slower rpm with a higher feed

d. Slower rpm with a slower feed

Answer:- a. Higher rpm with a slower feed

18. For setting of tool for threading

 it is aligned with the work by -

a. Try square

b. Centre gauge

c. Thread plug gauge

d. Template

Answer:- d. Template

19. Which one of Ihe reason for torn

threads while thread cutting on lathe?

a. Blum tool

 b. Heavy depth cut

c. Insufficient side clearance

d  Any one of These

Answer:- d  Any one of These

20. Nut dimension is represented by-

a. Mead of Bolt

b. Pitch Diameter of Bolt

c. Nominal Diameter of Bolt

d. Core Diameter of Bolt

Answer:- c. Nominal Diameter of Bolt

21. Speed while knurling should be -

a. Low

b. High

c. Intermittent
d. None of these

Answer:- a. Low

22. Workshop gauges keep at the temperature of-

a. 10 °C

b. 20 °C

c. 15 °C
d. 25 °C

Answer:- b. 20 °C

23. Gauge has GO and NO GO at its one end-

a. Fixed type plug gauge

b. Adjustable plug gauge

c. Progressive plug gauge

d. Double ended plug gauge

Answer:- c. Progressive plug gauge

24. Main purpose of Screw pitch gauge-

a. To check limits of screw thread                                        

b. To check distance between crest to crest of screw thread
c  To check minor diameter of screw thread

d. To check major diameter of screw thread

Answer:- b. To check distance between crest to crest of screw thread

25. Taper ring gauge is used for-

a. To check inner taper

b. To check outer taper

c. To check internal thread

d. To check outer thread

Answer:- b. To check outer taper