FITTER DAILY MOCK TEST / FITTER_TURNER_MACHINIST MOCK TEST
Technical study zone online Coaching (Instructor : Sushovan Das)
Online coaching for all mechanical trade (M : 9038159271)
Duration : 45min Full marks : 45
1. Which angle of the tool prevents from getting jammed in the groove and causes –––breakage?
A. Side rake angle
B. Side relief angle
C. Side clearance angle
D. Front clearance angle
2. What cutting speed to be used while turning in aluminium?
A. 50-80 m/min
B. 70-100 m/min
C. 35-70 m/min
D. 25-40 m/min
3. What feed to be given while turning in mild steel?
A. 1.4-2.00 mm/rev
B. 0.2-1.00 mm / rev
C. 2.0-2.5 mm/rev
D. 2.5-3.0 mm/rev
4. What is the name of the property of lubricant it refers , to a combination of wetability , surface tension and slipperiness?
A. Viscosity
B. Flash point
C. Oiliness
D. Fire point
5. Which is the demerits of 3 jaw chuck?
A. Work can be set with case
B. Internal and external jaws are available
C. Runout cannot be corrected
D. Work piece must be individually set
6. How much wedge angle will form while grind is the approach and trail angle for the tool?
A. 80°
B. 90°
C. 70°
D. 60°
7. What is the name of the tool angle if the slope is form the back of the tool towards the front cutting edge?
A. Negetive back rake angle
B. Positive top rake angle
C. Side rake angle
D. Zero rake angle
8. Which gauge is used to check the external thread profile after correcting with hand chaser?
A. Screw pitch gauge
B. Thread ring gauge
C. Screw thread micrometer
D. Thread plug gauge
9. Which parts supports the tool post and holds the cutting tool on lathe ?
A. Cross slide
B. Compound slide
C. Top slide
D. Saddle
10. Which part of the lathe is converting the rotary movement into the limear movement of the tool?
A. Change gear unit
B. Feed shaft
C. Quick change gear box
D. Fixed stud gear
11. Which material is used to make hand chasers?
A. Low carbon steel
B. Medium carbon steel
C. Tool steel
D. Mild steel
12. Tool cutting forces, with increase in cutting speed
A. More or less remain constant
B. Increase linearly
C. Decrease linearly
D. Unpredictable
E. None of the above
13. Back rake angle for HSS single point cutting tool to machinre free brass is
A. 0
B. 5
C. 10
D. 15
14. Chip are broken effectively due to following property
A. Stress
B. Elasticity
C. Toughness
D. Work hardening of work material
E. Ductility
15. What are the chief alloying elements of carbides?
A. Copper and tin
B. Copper and zinc
C. Carbon and tungsten
D. Lead and tin
16. What will be the effect, if the carriage is not locked while facing?
A. Correct face
B. Concave face
C. Convex face
D. Pip left out
17. What is the property of cutting tool to resist breakage due to sudden load during metal cutting?
A. Hardness
B. Toughness
C. Malleability
D. Ductility
18. Which material is used to make jaws of lathe chucks?
A. Low carbon steel
B. High carbon steel
C. Medium carbon steel
D. Pig iron
19. For under cutting _________ is used
A. High speed and high feed
B. High speed and low feed
C. Low speed and low feed
D. Low speed and high feed
20. While choosing a boring tool for boring a given dia select
A. A long tool
B. A short tool
C. A long tool and stout tool
D. A shortest possible and stoutest possible tool
21. A secondary clearance is given to the boring tool in order to
A. Prevent the heel of the tool rubing the internal surface
B. Give strength to the tool
C. Avoid chattering of the tool
D. Give good surface finish for the hole
22. The following type of lathe is operated through cams and cam plate?
A. Precision lathe
B. Crankshaft lathe
C. Screw cutting lathe (automatic)
D. Duplicating lathe
23. The following acts as driving shaft in lathe?
A. Counter shaft
B. Spindle shaft
C. Lead screw
D. None of the above
24. Find out the spindle speed for turning dia 40 mm cast iron , if the cutting speed is 15m/min
A. 119.3 rpm
B. 100.3 rpm
C. 219.3 rpm
D. 109.4 rpm
25. Ratio between spindle gear and stud gear is
A. 2:1
B. 1:2
C. 1:1
D. 1:3
26. In simple gear train the ratio depends on the number of teeth in
A. Stud gear and lead screw gear
B. Stud gear and idler gear
C. Lead screw gear and idler gear
D. Tumbler gear and lead screw gear
27. The purpose of back gear mechanism is
A. To increase number of speed
B. To increase RPM
C. To reduce the number of speed
D. To reduce RPM
28. If we have 4 step on the spindle pulley and with help of back gear we can have totally
A. 4 spindle speeds
B. 8 spindle speeds
C. 12 spindle speeds
D. 16 spindle speeds
29. Driving plates are used for
A. Mounting fixtures with workpieces
B. Rotating shafts between centres
C. Facing operation only
D. For internal operation only
30. Cemented carbide tool poor in
A. Compression
B. Tension
C. Shear
D. Compression and tension
E. Tension and shear
31. The cutting speed for machining cast iron with a HSS tool is of the order of
A. 30-50 m/min
B. 60-90 m/min
C. 100-150 m/min
D. 160-250 m/min
32. Lip angle of a single point tool is the order of
A. 10-20°
B. 30-45°
C. 50-60°
D. 60-80°
33. Throw away tips are used because
A. Initial cost is low
B. Tool changing is easier
C. Regrinding is not required
D. All of the above
E. None of the above
34. Angle between the rake face and plane perpendicular to rake face is known as
A. Side rake angle
B. Side relief angle
C. End relief angle
D. Back rake angle
35. For large positive back rake angle , tool will be
A. Weaker
B. Stronger
C. Smoother
D. Harder
36. In metal cutting at speed above 20 m/min maximum heat is carried by
A. Work
B. Tool
C. Chip
D. Equally by all of the above
37. In tool signature 0-7-6-8-15-16-0.8 , side relief angle is
A. 0°
B. 7°
C. 6°
D. 8°
38. The tool advances , maximum stress is exterted _______ the shear plane.
A. Along
B. Perpendicular
C. Inclined
D. None of the above
39. The tool life is affected by
A. Depth of cut
B. Cutting speed
C. Feed
D. All of these
40. If a tool maintains its cutting efficiency even at increased temperatures during cutting is called
A. Cold hardness
B. Red hardness
C. Toughness
D. All of these
41. It is the temperature at which the vapour is given off from the oil is known as
A. Fire point
B. Flash point
C. Pour point
D. oiliness
42. This tool is known as
B. Cranked tool
C. Knife edge tool
D. Roughing tool
43. What is the factor to select the suitable lathe carrier?
A. Length of the work
B. Material of the work
C. Diameter of the work
D. Material of the tool
44. What is the fine feed rate of lathe cutting tool while facing?
A. 0.1mm
B. 0.05mm
C. 0.15mm
D. 0.2mm
45. Which substance saves the machine and its parts from corrosion , wear and tear and it minimises the friction?
A. Cutting fluid
B. Lubricant
C. Soap water
D. Distilled water
ANSWER KEY
1. B
10. B
19. C
28. B
37. D
2. B
11. C
20. C
29. B
38. A
3. B
12. C
21. A
30. E
39. D
4. C
13. D
22. C
31. A
40. B
5. C
14. D
23. A
32. D
41. B
6. B
15. C
24. A
33. A
42. B
7. A
16. C
25. C
34. A
43. C
8. B
17. B
26. A
35. A
44. B
9. C
18. B
27. A
36. C
45. B
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