2017 FEBRUARY FITTER THEORY SEMESTER - II

2017 FEBRUARY  FITTER THEORY SEMESTER - II

1. Gas Flame used for Braze Welding_.

a) Carburizing Flame

b) Oxidizing Flame

c) Acetylene Flame

d) Less Carburizing Flame

Answer:- b) Oxidizing Flame

2. In........................position, welding can be easily done.

a) Vertical b) Horizontal c) Flat d) Overhead

Answer:- c) Flat

3. In Acetylene cylinder acetylene is mixed with_.

a) Mercury b) Acetone

c) Water d) Carbon-di-oxide

Answer:- b) Acetone

4. Flame suitable for preheating before cutting__

a) Neutral b) Oxidizing c) Carburizing d) Less oxidizing

Answer:- a) Neutral

5. Letter represents basic hole .........
a) h b) gc)G

d)H

Answer:- d)H

6. In twist drill 10-H-IS 5101-HS, 10 represent._.

a) Type of Tool b) Drill Diameter

c) Indian Standard Number d) Material of Drill

Answer:- b) Drill Diameter

7. Least count of Vernier micro meter is__.

a) .001 mm b) 0.1 mm c) 0.02 mm d) 0.05 mm

Answer:- a) .001 mm

8. Safe storage pressure of Acetylene Gas is_.

a) 0.5 kg/cm²

 b) 1 kg/cm²  c) 1.5 kg/cm²  d) 2 kg/cm²

Answer:- b) 1 kg/cm²  

9. Weld used for making T joint on flat_.

a) Fillet b) Filler c) Braze d) None of these

Answer:- a) Fillet

10. During preparation of process sheet, which one is necessary?

a) Selection of machine b) Selection of special tools

c) Selection of Materials d) All of these

Answer:- d) All of these

11. Floor Inspection is carried out at_.

a) In separate room b) At certain interval

c) At actual job place

d) After setting of machine

Answer:- c) At actual job place

12. In British Standard System, No. of Grade fits are _
a) 16 b)20 c)21

d) 14

Answer:- c) 21

13. Number of grades for fundamental tolerances
a) 18

 b)20

c) 16

d)14

Answer:- a) 18

14. Diameter of Block size for cutting of M10 thread with pitch 1.5 mm_

a) 1.5 mm b) 15 mm c) 9.85 m

d) 10 mm

Answer:- c) 9.85 m

15. Drill RPM for 10 mm hole, if cutting speed is 33 m/min
a) 110 b) 1050 c)1100d)1000

Answer:- b) 1050

16. Tap drill size for M12 x 1.25 tap_.

a) 10.65 mm b) 10.63 mm c) 12 mm d) 13.25 mm

Answer:- b) 10.63 mm

17. Material used for making Grinding Wheel______•

a) Sand b) Granite

c) Calcium carbonate d) Silicon Carbide

Answer:- d) Silicon Carbide

18. A die is_.

a) External thread cutting tool

 b) Internal thread cutting tool

c) Square thread cutting tool d) Acme thread cutting tool

Answer:- a) External thread cutting tool

19. Furnace used in the production of Pig Iron_.

a) Blast Furnace

b) Cupola Furnace

c) Open Hearth Furnace d) Electric arc Furnace

Answer:- a) Blast Furnace

20. Grey cast iron is_.

a) Tensile b) Ductile c) Tough d) Malleable

Answer:- c) Tough

21. In 18-8 Stainless Steel 8 indicates the percentage of_.

a) Chromium b) Cobalt c) Vanadium d) Nickel

Answer:- d) Nickel

22. Melting point of Zinc is

a) 232° C

b)420°C

c) 327° C d) 216°C

Answer:- b)420°C

23. Carbon Content in High Carbon Steel_.

a)<0.25% b) 0.25%to0.7%      c)0.7%to 1.5%       d)> 1.5%

Answer:- c) 0.7%to 1.5%

24. Carbon content in grey cast iron_.

a) 2% to 3% b) 3% to 4% c) 4% to 5% d) 3% to 5%

Answer:- b) 3% to 4%

25. Surface hardness of Dowel! Pin_.

a) 40-44 HRC b) 50-54 HRC

c) 60-64 HRC

d) 70-74 HRC

Answer:- c) 60-64 HRC

26. Adhesive bonding are used for_.

a) Fastening b) Sealing c) Both (a) & (b)      d) Not (a) nor (b)

Answer:- c) Both (a) & (b)     

27. Core Hardness of Dowel Pin is___•

a) 40-44 HRC b) 50-54 HRC c) 60-64 HRC d) 70-74 HRC

Answer:- b) 50-54 HRC

28. When Sulphur is added to steel its_increases?

a) Brittleness

b) Hardness c) Softness d) Surface Finish

Answer:- a) Brittleness

29. Vernier height Gauge is specified by_.

a) Height of Main Scale

b) Width of Beam

c) Length of scriber d) Height of Base

Answer:- a) Height of Main Scale

30. Which type of extinguisher is used in welding shop?

a) Foam type extinguisher b) Dry powder extinguisher

c) C02 extinguisher d) Hollow extinguisher

Answer:- c) C02 extinguisher

31. A feller gauge is used for_.

a) Adjusting the parts for play b) Checking gap between mating parts

c) Checking radious of jobs d) Checking accuracy of hole

Answer:- b) Checking gap between mating parts

32. A drill hole goes out of centre due to_■

a) Inproper champing of work piece

b) Work piece having blow holes

c) Centre punch mark not being large enough to give proper seat to the chisel edge of
drill

d) Any one of the above

Answer:- d) Any one of the above

33. A short reamer with an axial hole used with an arbor or mandrel is called
a) Parallel reamer b) Adjustable reamer

c) Expansion reamer d) Chucking reamer

Answer:- d) Chucking reamer

34. Sidewavs of a machine are frequently lubricated by_.

a) Oil can b) Grease gun c) Ring lubricator     d) Pump lubricator

Answer:- a) Oil can

35. Under Hole basis system....................is clearance fit

a) 25 h₇/g₁₁ 

 b) 25 H₇/p₆

c) 25 H₇/z₁₁

d) 25 H₇/g₁₁ 

Answer:- d) 25 H₇/g₁₁ 

36. The cause of glazing of grinding wheel is_.

a) Grain size is too fine b) Wheel is hard

c) Wheel speed is too fast d) Both (a) & (b)

Answer:- d) Both (a) & (b)

37. Preventive maintenance is_.

a) The overall lubrication and repair work carried out by the maintenance
section in advance of machine coming to breakdown

b) The maintenance work for any fault noticed during the work

c) Done to prevent the maintenance of machine

d) None of these

Answer:- a) The overall lubrication and repair work carried out by the maintenance

38. Triangular scrapers is used for scraping_.

a) Large diameter holes b) Bearing surfaces

c) Small dia meter holes d) Large flat surfaces

Answer:- c) Small dia meter holes

39. Counter boring is done to_.

a) To make seat for cheese head screw b) To make seat for socket head
c) To enlarge the through hole d) None of these

Answer:- ) To make seat for socket head

40. Shellac Bond is represented by
a)S b)B c)E

d) V

Answer:- c) E

41. Specification of Grinding wheel is "51 A 46 L 5 V 23", Here 5 indicates_

a) Bond b) Grain Size c) Structure d) Grade

Answer:- c) Structure

42. In the above question Letter L indicates_.

a) Bond b) Grain Size c) Structure d) Grade

Answer:- b) Grain Size

43. For general work Lip clearance angle
a) 10° to 15°     . b)12°tol5°    c) 10°   to 12° d) 12° to 18°

Answer:- b)12°tol5° 

44. Drills are made up of__•

a) High Carbon Steel b) H.gh speed Steel

c Either (a) or (b) d) Both (a) & (b)

Answer:- d) Both (a) & (b)

45. Which one of the following is used to hold straight shank drill having dia meter less

than 12 m
a) Sleeve

b) socket c) Drill chuck d) Drill drift

Answer:- c) Drill chuck

46. If the dimension of component is 25±0.03 mm its tolerance is- .

a) 0.03 mm b)-0.03 mm c) 0.06 mm d) 0.00 mm

Answer:- c) 0.06 mm

47. A cutting tool used to finish and enlarge a hole is known as--R

a) Drill b)Tap c) Die d) Reamer

Answer:- d) Reamer

48. What is used to remove broken tap?
a) Tap disposer        b) Tap wrench c) Tap extractor       d) Tap nut

Answer:- c) Tap extractor      

49. Interchangeability is normally applied for: - _
a) Repairing of parts b) Mass production

c) Single piece production d) All of these

Answer:- d) All of these

50. Gauges are made up of___-

a) Alloy steel b) Cast Iron c) Cast Steel

d) Mild Steel

Answer:- c) Cast Steel