FITTER Q&A 2nd year (1-125)

 FITTER QUESTION 2nd year 

                 (1-125)

 1. Why slots are provided in the slotted castle nuts?

A To fix split pins   B For good appearance   

C Reduce the weight of nut  D For easy removal and fitment

Answer: A


2.Which special file is used for narrow work?

A Pillar file  B Square file  C Dread naught file   D Swiss pattern file

Answer: A


3. What is the name of gauge?

A Ring gauge          B Plug gauge   

C Taper ring gauge D Taper plug gauge

Answer: A


4. Which gauge is used to check the gap between the mating parts? 

A Slip gauge        B Plug gauge 

C Feeler gauge     D Radius gauge

Answer: C


5.What is the name of limit gauge?

A Plain ring gauge            

B Taper plug gauge                                                                                          

C Progressive plug gauge  

D Double ended plug gauge

Answer: C


6 Which material is used to clean the slip gauge?

A Wax    

B Kerosene 

C Soluble oil   

D Carbon tetra chloride

Correct Answer:- D Carbon tetra chloride


7 Which material is to wash off the lapping plate after charging?

A Oil  

B Kerosene  

C Coolant oil  

D Petroleum jelly

Correct Answer:- B Kerosene  


8 Which material is used to protect slip gauge from rust? 

A Oil   

B Wax   

C Kerosene 

D Petroleum jelly

Correct Answer:- D Petroleum jelly


9 What is the procedure to built up the slip gauge for particular dimension? 

 A Start wringing with the largest slip gauges 

B Maximum number of block 

C Built with grade 0 accuracy 

D Start wringing with the small slip gauge

Correct Answer:- A Start wringing with the largest slip gauges 


10 What is the name of the gauge?

A Plain snap gauge  

B Thread snap gauge   

C Thread pitch gauge  

D Adjustable snap gauge

Correct Answer:- D  Adjustable snap gauge


11 Which finishing process have a high degree of dimensional accuracy?
A Filing    
B Turning  
C Grinding  
D Lapping
Correct Answer:- D Lapping


 12 Which is the abrasive used for lapping soft steel and non-ferrous metals? 

A Silicon carbide 

B Diamond   

C Boron carbide  

D Fused alumina
Correct Answer:- D Fused alumina



13 Why grooves are provided on the surface of the lapping plate? 
A To allow expansion    
B To provide clearance  
C To retain the abrasive   
D To permit minor adjustment
Correct Answer:-C To retain the abrasive   


14 What is the method of surface hardening?

A Nitriding  
B Pack - carburising 
C Flame hardening 
D Induction hardening
Correct Answer:- B Pack - carburising 


15 What is the method of surface hardening?

A Nitriding 
B Case hardening 
C Flame hardening 
D Induction hardening
Correct Answer:-C Flame hardening

16 What is the name of the heat treatment process for reheating the hardened steel to a temperature below 400°C followed by cooling?  

A Annealing 

B Hardening 

C Tempering 

D Normalising

Correct Answer:- C Tempering 


17 Why the tempering process carried out in steel? 

 A To add cutting ability 

B To relive strain and stress 

C To refine the grain structure 

D To regulate the hardness and toughness

Correct Answer:- D To regulate the hardness and toughness


18 What is the purpose of annealing in steel?

A To add cutting ability

B To increase wear resistance 

C To relieve the internal stress

D To refine the grain structure of the steel

Correct Answer:- C To relieve the internal stress


19 What is the name of the key?


A Sunk key 

B Feather key 

C Flat saddle key 

D Hollow saddle key

Correct Answer:- B Feather key 


20 What is the purpose of key? 

A To transmit torque 

B Assembly purpose 

C Lock the assembly part

D Permit clearance between mating part

Correct Answer:- A To transmit torque 


21 What is the ratio of key way taper? 

21 கீ வே டேப்பரின் விகிதம் என்ன?

A 01:19:00 B 01:20:00 C 01:50:00 D 1:100

Correct Answer:-  D 1:100


22 What is the name of key?

A Taper sunk key 
B Flat saddle key 
C Parallel sunk key 
D Hallow saddle key
Correct Answer:- A Taper sunk key 


23 Which type of metal screws useful for self tapping on hard or brittle materials?
A Self piercing 
B Thread cutting 
C Thread forming 
D Hammer driven screw
Correct Answer:- B Thread cutting 


24 What is the advantage of wing nut? 
A In coach building work 
B Heavy duty assembly work 
C Loosen and tighten without wrench 
D Provide decorative appearance
Correct Answer:- C Loosen and tighten without wrench 


25 What is the name of gauge?
A Pitch gauge 
B Angle gauge 
C Feeler gauge 
D Radius gauge
Correct Answer:- D Radius gauge


26 Which gauge is used to check the accuracy of an external thread? 
A Snap gauge 
B Thread ring gauge 
C Thread plug gauge
D Centre gauge
Correct Answer:- B Thread ring gauge 


27 What is the instrument used in measuring external diameter?

A Vernier caliper 
B Outside caliper 
C Parallel leg caliper 
D Pair of special jaws by using slip gauge
Correct Answer:- D Pair of special jaws by using slip gauge

28 Find out the height of slip gauge ‘a’?(sin 25° = 0.4226)

A 84.50 mm    B 84.52 mm      C 84.51 mm | 84.51      D 85.20 mm
Correct Answer:- B 84.52 mm 

29 How many set of feeler gauges are available as per BIS? 
A Set No: 1, 2 
B Set No: 1, 2, 3, 4 
C Set No: 1, 2, 3, 4, 5 
D Set No: 1, 2, 3, 4, 5, 6
Correct Answer:- B Set No: 1, 2, 3, 4 

30 What material is used to make radius and fillet gauge? 
A Tool steel 
B Hardened steel steel
C High carbon steel 
D Medium carbon steel 
Correct Answer:- B Hardened steel steel

31 What is the part marked as ‘x’ in lapping tool?


A Slit

B Bush 

C Sleeve

D Groove

Correct Answer:- A Slit


32 What is the purpose of slit provided in the lapping tool? 

A For clearance 

B For expansion 

C To retain abrasive 

D To adjust the sleeve

Correct Answer:- B For expansion 


33 What is the name of operation?

A Internal ring lapping 

B External ring lapping 

C Lapping internal cylinder 

D Lapping large diameter

Correct Answer:- D Lapping large diameter


34 What type of abrasives are used in honing cast iron and non-ferrous materials? 

A Diamond 

B Boron carbide 

C Silicon carbide 

D Aluminium oxide

Correct Answer:- C Silicon carbide 


35 Which method of surface hardening, the surface remains free from scales? 

A Nitriding 

B Case hardening 

C Flame hardening 

D Induction hardening

Correct Answer:- D Induction hardening


36 What is the process if the steel is heated above critical temperature and soaking it for sufficient time and cooling it very slowly within furnace? 

A Annealing 

B Hardening 

C Tempering 

D Normalising

Correct Answer:- A Annealing 


37 What is the process to refine the structure of steel component? 

A Tempering 

B Annealing 

C Hardening 

D Normalising

Correct Answer:- D Normalising


38 Which method of surface hardening is done in a heated salt bath? 

A Flame hardening 

B Gas carburising 

C Pack carburising 

D Liquid carburising 

Correct Answer:- D Liquid carburising 


39 What is the name of part marked as X

A Taper shaft 

B Splined shaft 

C Serrated shaft 

D Screw pitch gauge

Correct Answer:- C Serrated shaft 


40 Which key has rectangular cross section is fit into keyway cut on both shaft and hub? 

A Sunk key 

B Feather key 

C Flat saddle key 

D Hollow saddle key

Correct Answer:- A Sunk key 


41 Which key is useful for fitting on tapered shafts?

A Feather key 

B Gib head key 

C Woodruff key 

D Flat saddle key

Correct Answer:- C Woodruff key 


42 Where is circular taper key used? 

A Light duty transmission 

B Bi-directional rotation 

C Lengthy shaft 

D Tapered shaft

Correct Answer:- A Light duty transmission 


43 How the plain bearings are kept in a position without allowing them to rotate along with the shaft? 

A By clamps 

B By bolt and nut 

C By key or screws 

D By locking device

Correct Answer:- C By key or screws 


44 What is the name of key?

A Flat saddle key 

B Taper sunk key 

C Parallel sunk key 

D Hallow saddle key

Correct Answer:- A Flat saddle key 


45 What is the name of key?

45 சாவியின் பெயர் என்ன?

A Sunk key 

B Feather key 

C Gib head key 
D Wood ruff key
Correct Answer:- C Gib head key 


46 What is the file for lock repair and filing hard notches in keys? 
A Pillar file 
B Flexible file 
C Warding file 
D Swiss pattern file
Correct Answer:- C Warding file 


47 What is the name of screw?


A Grub screw

B Driver screw 

C Self taping screw

D Thread cutting screw 

Correct Answer:- B Driver screw


48 What is the advantage of lock washer? 

A Provide increased bearing surface 

B Prevent the damage to the surface 

C Distribute even pressure on working surface 

D Prevent bolt or nut from loosening under vibration

Correct Answer:- D Prevent bolt or nut from loosening under vibration


49 What is the name of screw driver?

A Offset screw driver 

B Philips screw driver 

C Standard screw driver 

D Heavy duty screw driver

Correct Answer:- A Offset screw driver


50 What is the name of locking device?

A Tab washer 

B Locking plate 

C Lock washer

D Spring washer

Correct Answer:- D Spring washer


51 What is the advantage of using Gib headed key? 

A Used for tapered fittings 

B Can be withdrawn easily 

C Provides unidirectional torque

D Good in high speed application

Correct Answer:- B Can be withdrawn easily 


52 Which file is used for finishing sharp corners? 

A Pillar file 

B Riffler file 

C Barrette file

D Warding file

Correct Answer:- C Barrette file


53 What is the name of file?

A Tinker’s file 
B Crossing file 
C Swiss pattern file 
D Dread naught file
Correct Answer:- A Tinker’s file 


54 Which device is used to check the workpiece to confirm the shape? 
A Profile gauge 
B Snap gauge 
C Caliper gauge 
D Progressive gauge
Correct Answer:- A Profile gauge 

55 What is the purpose of feeler gauge? 
A Check the depth of drilled hole B Check the pitch of screw thread 
C Check the radius of workpiece 
D Check the gap between the mating parts
Correct Answer:- D Check the gap between the mating parts


56 What is the name of gauge?


A Drill gauge 
B Centre gauge 
C Profile gauge 
D Standard wire gauge
Correct Answer:- D Standard wire gauge


57 Which gauge is used to check the outside diameter of a cylindrical shaft? 
A Plug gauge 
B Plain ring gauge  
C Taper ring gauge 
D Progressive plug gauge
Correct Answer:- B Plain ring gauge  


58 What is the act of joining the slip gauges together for building up sizes?
A Glazing 
B Pinning
C Loading 
D Wringing
Correct Answer:- D Wringing


59 What material is used to make sine bar? 
A Invar steel 
B High speed steel 
C High carbon steel 
D Stabilized chromium steel
Correct Answer:- D Stabilized chromium steel


60 How the length of sine bar is specified?  
A Distance between outer point of roller
B Distance between inner point of roller 
C Distance between centre point of rollers 
D Distance between the edges of sine bar 
Correct Answer:- C Distance between centre point of rollers 


61 Which one forms the hypotenuse of the triangle while checking with sine bar? 
A Surface plate
B Sine bar width 
C Sine bar length
D Slip gauges height 
Correct Answer:-  C Sine bar length

62 What is the effect of excessive application of abrasive compound in lapping operation? 

A Developing inaccuracies 

B Bright spots will be visible

C Obstruct component movement 

D Lapping compound will be sticky

Correct Answer:- A Developing inaccuracies 


63 What is caused if the lap is harder than the workpiece? |

A Workpiece will cut the lap 

B Accuracy can’t be obtained 

C Lap will cut the workpiece 

D Lapping operation leaves high spots 

Correct Answer:- A Workpiece will cut the lap 


64 Which material is used to make small diameter laps? 

A Cast iron 

B Aluminium 

C Bronze or zinc 

D Copper or brass

Correct Answer:- D Copper or brass


65 What is the name of surface texture measuring instrument?


A Dial test indicator 
B Electrical surface indicator 
C Electronic surface indicator 
D Mechanical surface indicator
Correct Answer:- D Mechanical surface indicator


66 Why manual stroking is preferred for large quantities in honing operation? 
A To reduce cost 
B To reduce time 
C To keep close tolerance 
D To reduce maintenance cost
Correct Answer:- C To keep close tolerance 


67 What is the purpose of hardening? 
A Refine the structure 
B Increase toughness 
C Increase cutting ability 
D Relieve stress and strain
Correct Answer:- C Increase cutting ability


68 Which method of heat treatment to improve machinability and ductility in the job? 
A Annealing 
B Hardening 
C Tempering 
D Normalizing
Correct Answer:- A Annealing 


69 What is the disadvantage of flame hardening in the heat treatment process?
A More distortion 
B Long hardening time 
C Small depth of hardening | hardening 
D Not suitable for small work pieces
Correct Answer:- D Not suitable for small work pieces


70 What is the name of method in metallic coating done by rolling or drawing the layers of metal on the base metal? 
A Spraying 
B Cladding 
C Enameling
D Molten metal bath
Correct Answer:- B Cladding 


71 Which type of key used if the hub of pulley has to axially slide on the shaft to some distance? 
A Feather key 
B Flat saddle key 
C Circular taper key
D Hallow saddle key
Correct Answer:- A Feather key 


72 What is the name of file?


A Pillar file 
B Warding file 
C Dreadnaught file 
D Swiss pattern file
Correct Answer:- B Warding file 


73 Which nut protects the bolt end thread from damages? 
A Cap nut 
B Castle nut 
C Slotted nut 
D Knurled nut 
Correct Answer:- A Cap nut 


74 Which grade slip gauge is used for precision tool room applications?
A Grade 00 B Grade 0 C Grade I D Grade II
Correct Answer:- C Grade I 

75 Which material is used to make slip gauge block? 
A Tool steel 
B Low grade steel 
C High grade steel with low thermal expansion 
D High carbon steel 
Correct Answer:- C High grade steel with low thermal expansion 

76 Which operation is performed with fine abrasive particles? 

A Filing 
B Lapping 
C Scraping 
D Polishing
Correct Answer:- B Lapping 


77 What is the purpose of normalising? 
A Add cutting ability 
B Develop high hardness 
C Increase wear resistance 
D Remove stress and strain
Correct Answer:- D Remove stress and strain


78 Which structure of steel contain 0% carbon? 
A Ferrite 
B Pearlite 
C Austenite 
D Cementite
Correct Answer:- A Ferrite 


79 What is the method of surface hardening? 


A Nitriding 
B Case hardening 
C Flame hardening 
D Induction hardening
Correct Answer:- D Induction hardening


80 Which type of key is used for transmitting high torque on both direction of rotation?
A Flat saddle key 
B Taper sunk key 
C Woodruft key 
D Tangential key
Correct Answer:- D Tangential key


81 What is the use of ring gauge? 
A Check hole diameter 
B Check shaft diameter 
C Check tapered shaft diameter 
D Check internal thread diameter
Correct Answer:- B Check shaft diameter 


82 Which gauge is used to check the accuracy of an internal thread? 
A Ring gauge 
B Snap gauge 
C Thread ring gauge 
D Centre gauge 
Correct Answer:- C Thread ring gauge 


83 What is the name of the gauge?

A Ring gauge 
B Snap gauge 
C Taper ring gauge
D Internal thread gauge
Correct Answer:- C Taper ring gauge


84 What is the procedure to select the slip gauge for particular dimension? 
A Built with grade accuracy
B Minimum number of blocks 
C Maximum number of block 
D Start wringing with small size slip gauge 
Correct Answer:- D Start wringing with small size slip gauge 


85 Which process improves the quality of fit between the mating components?
A Filing 
B Turning 
C Grinding 
D Lapping
Correct Answer:- D Lapping


86 Which abrasive is used for lapping hardened steel and cast iron? 
A Silicon carbide
B Boron carbide 
C Aluminium oxide 
D Fused aluminum
Correct Answer:- A Silicon carbide


87 Which finishing operation is performed by the tool that rotate and reciprocate simultaneously? 
A Drilling 
B Honing 
C Lapping 
D Grinding
Correct Answer:- B Honing 


88 Why holes are provided in ring type lapping?
A Lubrication 
B Removal of heat 
C Hold lapping compound 
D Increase the efficiency
Correct Answer:- C Hold lapping compound 


89 Which type of key has one face curvature to match shaft surface? 
A Sunk key 
B Flat saddle key 
C Circular taper key 
D Hallow saddle key
Correct Answer:- D Hallow saddle key


90 What is the name of key?


A Parallel sunk key 
B Gib head key 
C Wood ruff key 
D Tapper sunk key
Correct Answer:- A Parallel sunk key 

91 Which type of cutting tool is tempered by heating upto 230°C? 

A Taps 

B Drills 

C Turning tool 

D Reamers

Correct Answer:- C Turning tool 


92 Why normalising process is carried out in steel?

A To add cutting ability 

B To develop high hardness 

C To remove stress and strain

D To increase wear resistance 

Correct Answer:- C To remove stress and strain


93 Which heat treatment process increases the wear resistance of steel? 

A Annealing 

B Tempering

C Hardening

D Normalising

Correct Answer:- C Hardening


94 What is the purpose of annealing? 

A To soften the steel  

B To add cutting ability 

C To increase wear resistance  

D To refine the grain structure of the steel

Correct Answer:- A To soften the steel


95 Why square head screws are provided with collar?

 A Protect work surface

B Raise the head width 

C Provide leak proof joint 

D Provide access for tools

Correct Answer:- A Protect work surface


96 What is the purpose of taper plug gauges?  

A Check the hole with perfect fit  

B Check the inside threaded dia 

C Check tapered hole with perfect fit 

D Check the taper accuracy of outside dia

Correct Answer:- C Check tapered hole with perfect fit 


97 Why slots are provided in the adjustable ring lap?  

A For lubrication  

B Permit clearance

C For expansion 

D Permit feeding of lapping compound

Correct Answer:D Permit feeding of lapping compound


98 Which abrasive has excellent cutting properties and expensive? 

A Diamond 

B Boron carbide 

C Silicon carbide 

D Aluminium oxide

Correct Answer:- B Boron carbide 


99 What is lapping?  

A Filing operation  

B Grinding operation 

C Chiseling operation

D Precision finishing operation

Correct Answer:- D Precision finishing operation


100 What is the name of lap tool?


A Split bush lap 
B Adjustable ring lap  
C Adjustable solid lap
D Charging cylindrical lap
Correct Answer:- A Split bush lap 

101 What is lead of multi start thread? 
A Pitch x no of starts
B Lead x no of starts 
C Pitch x major diameter 
D Pitch x minor diameter
Correct Answer:- A Pitch x no of starts


102 What is the type of screw?


A Hexagon head screw 
B Grub screws 
C Round head screw
D Square head screw
Correct Answer:- B Grub screws


103 What is the name of the nut?


A Castle nut 
B Slotted nut 
C T - Nut 
D Cap nut
Correct Answer:- A Castle nut 


104 What is the name of nut?

A Castle nut 
B Hexagon weld nut 
C Hexagon nut with collar 
D Self locking nut
Correct Answer:- B Hexagon weld nut 


105 What is the name of tool?

A Face wrench
B Hook spanner 
C Face pin wrench
D Pin wrench
Correct Answer:- B Hook spanner 


106 What is the type of screw?

A Hexagon socket head cap screws  
B Hexagon head screws 
C Counter sink head screws 
D Raised cheese hand screws
Correct Answer:- A Hexagon socket head cap screws 

107 What is the file that is rectangular in section and parallel in width with one safe edge?  
A Dread naught file
B Pillar file  
C Warding file 
D Swiss pattern file
Correct Answer:- B Pillar file  


108 Which file has double cut on faces and single cut at edges?
A Pillar file
B Single cut file
C Rasp cut file  
D Warding file 
Correct Answer:- D Warding file 


109 What is the name of file?

A Pillar file
B Warding file 
C Swiss pattern file
D Dreadnaught file 
Correct Answer:- C Swiss pattern file


110 What is the name of gauge?

A Thread plug gauge  
B Thread ring gauge 
C Caliper gauge 
D Ring gauge
Correct Answer:- B Thread ring gauge 


111 What is the name of gauge? 


A Taper gauge
B Snap gauge
C Progressive plug gauge 
D Double end plug gauge
Correct Answer:- B Snap gauge


112 What is the use of drill gauge?
A Check the diameter of the drill  
B Check the length of the drill
C Check the cutting angle of the drill 
D Check the lip length 
Correct Answer:- A Check the diameter of the drill  


113 What is marked as ‘X’?


A Length
B Depth surface 
C Contact rollers
D Width
Correct Answer:- A Length


114 What is marked as ‘X’?


A Height of slip gauge 
B Length of sine bar 
C Datum surface 
D Adjacent side
Correct Answer:- A Height of slip gauge 


115 What is the name of gauge?



A Screw pitch gauge
B Angle gauge 
C Slip gauge 
D Centre gauge
Correct Answer:- D Centre gauge

116 What is the name of gauge?


A Centre gauge 
B Screw pitch gauge 
C Radius gauge 
D Snap gauge
Correct Answer:- B Screw pitch gauge


117 What is the type of gauge?


A Thread ring gauge 
B Roller type thread caliper gauge
C Thread plug gauge
D Anvil type thread snap gauge
Correct Answer:- D Anvil type thread snap gauge


118 What is the type of gauge?


A Double ended plug gauge 
B Progressive plug gauge 
C Taper plug gauge 
D Taper ring gauge
Correct Answer:- A Double ended plug gauge 


119 What is marked as ‘X ‘? 



A Double ended plug gauge - No Go 
B Progressive plug gauge - Go
C Taper plug gauge - Go 
D Progressive plug gauge - No Go
Correct Answer:- B Progressive plug gauge - Go


120 What is the gauge?


A Snap gauge
B Progressive plug gauge 
C Taper ring gauge  
D Taper plug gauge
Correct Answer:- D Taper plug gauge


121 What is marked as ‘X’?


A Thread ring gauge - Go  
B Thread ring gauge - No Go 
C Ring gauge
D Thread pitch gauge
Correct Answer:- B Thread ring gauge - No Go


122 What is the name of gauge?


A Thread ring gauge  
B Thread plug gauge
C Thread pitch gauge
D Taper plug gauge
Correct Answer:- B Thread plug gauge

123 What is the quenching media used in heat treatment to obtain faster rate of cooling?
A Brine solution 
B Air
C Oil 
D Water
Correct Answer:- A Brine solution 


124 What is marked as ‘X’ ? 


A Upper critical temperature
B Lower critical temperature
C Austenite
D Ferrite
Correct Answer:- B Lower critical temperature


125 What is the angle of elbows and bends that provide diversions?
A 90° & 45°        B 30° & 60°       C 20° & 40°      D 70° & 120°
Correct Answer:- A 90° & 45°

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