2. A left hand tool on a lathe cuts most efficiently when
Correct : B. It travels from left to right
3. A Bick iron is made of
Correct : C. While cast iron
4. Which of the following is a process of chipless machining?
Correct : E. Cold heading
5. Which one of the following methods can be used for turning external tapers only?
Correct : B. Tail stock offset
6. Plain and butt welds may be used on materials upto approximately
Correct : E. 25 mm thick
7. Greater proportion of heat in a cutting operation is produced in the region of
Correct : B. shearing plane of chip
8. The function of a chip breaker in a cutting tool is
Correct : C. To break the chips into short segrments
9. Continuous chips in ductile metals is promoted by
Correct : E. Rine feed
10. A stub tooth is one that is
Correct : B. Smaller in proportion to its length than the involute tooth
11. Gear tooth vernier is used to measure
Correct : A. Pitch line thickness of gear tooth
12. The moisture content of wood used for patterns should be
Correct : D. Less than 15%
13. The coefficient of friction between chip and tool is the variable. It can be reduced by
Correct : C. Reducing the effective rake angle
14. A collimated light beam is used for producing heat in
Correct : E. Laser welding
15. A time switch is
Correct : C. A 24 hour timing device used to open and close electric circuits according to time of day on a continually repeating schedule
16. In instrumentation a correction is
Correct : C. The revision applied to the indicated value so that the final result obtained improves the worth of the result
17. A 12 mm drilling machine means
Correct : B. It can drill holes maximum 12 mm in diameter
18. A sprue is
Correct : E. A vertical passage through the cope and connecting the pouring basin to the runner or gate
19. Which one of the following methods is generally not used in welding of chromium molybdenum steels
Correct : E. Resistance
20. Which of the following is the most rapid quenching medium?
Correct : A. Solution of caustic soda
21. The length of hacksaw blades is
Correct : B. 200 - 300 mm
22. In production work where several castings are required
Correct : E. gated patterns are used
23. In following operations are to be performed on a job, which one would be performed first
Correct : D. Drilling
24. Toole life cannot be defined as
Correct : A. number of minutes after which tool failed
25. Which of the following press is best suited for embossing?
Correct : A. Knuckle joint press
26. Coarse feed, low rake angle, low cutting speed and insufficient cooling help produce
Correct : A. continuous chips with built up edges in ductile materials
27. The chisels used in sheet metal work have
Correct : A. Rounded cutting edge
28. The processes used for the machining of sintered and tungsten carbide is
Correct : B. Electroforming process
29. Nitrided steel is used for gears where
Correct : D. High hardness is desired on teeth
30. Which one of the following cannot be used as a moulding material
Correct : C. Glass
31. Severe quenching may lead to
Correct : C. formation of cracks
32. Steel balls are required in large quantities. Which process would you select for the manufacture?
Correct : A. Cold heading
33. A half nut is
Correct : B. Mechanism that locks the lathe carriage to the lead screw for thread cutting
34. Out of the following materials which one will have lowest temperature of freezing?
Correct : D. Lead
35. Trepanning tool is used on
Correct : B. Planers
36. A blunt tool is used in
Correct : E. hot spinning.
37. Suitable change wheels for cutting 17 T.P.I. on 4 T.P.I. lead screw lathe are
Correct : C. 20 to 85
38. For the measurement of velocity, the transduction method could be
Correct : E. Any of the above
39. Burnishing operation is done with the help of
Correct : C. Balls
40. Which of the following process connot be carried out on lathe machine?
Correct : B. Riveting
41. Which of the following operations is known as 'sweating'
Correct : A. Tinning the two surfaces to be joined, applying flux and heating
42. The stake used for making conical shapes is known as
Correct : C. Funnel stake
43. A special form of piercing in which the entire contour is not cut, is known as
Correct : A. Lancing
44. Carbon tool steels generally loose their hardness above
Correct : B. 200?C
45. Loading of grinding wheel occurs when
Correct : D. abrasive grains become clogged with particles of metal being ground
46. Preferred numbers are the numbers in
Correct : E. geometric progression
47. Surveying tapes are generally made of
Correct : A. Invar
48. In gas welding, the welding rods of 30 mm diameter are available. What will be the maximum thickness of material that can be welded with this rod?
Correct : A. 3 mm
49. The temperature scanning system are used
Correct : D. Where monitoring of a relatively large number of temperatures is needed
50. A good cutting action is indicated by
Correct : B. Low cutting ratio
51. The facting sand used in foundry generally consists of
Correct : C. Silica and clay
52. A massometer is
Correct : D. An instrument used for measuring mass of free flowing solids through conveyor pipes
53. Carbon tool steel are broadly classified into two categories as
Correct : D. water hardening and oil hardening
54. Green sand moulds are
Correct : C. Green in colour
55. The fuel used in pit furnace is generally
Correct : C. Coke
56. A pair of tumbler gears is used in
Correct : E. Centre lathe
57. Cast iron pipes are cast by
Correct : C. Centrifugal casting process
58. Thermocouples are generally used for accurate temperature measurement upto
Correct : D. 1600?C
59. Discontinuous chip in ductile material is produced because of
Correct : A. Insufficient cooling
60. In power presses bolster plate is used to
Correct : B. mount the press tool
61. Draft allowance on castings is generally
Correct : D. 10 - 15 mm/M
62. Railway rails are generally made of
Correct : B. Alloys steel containing 0.8 to 0.9% carbon
63. Sweep patterns are used for
Correct : B. Objects of circular shapes
64. The linear characteristics of valve is
Correct : D. One in which the flow is directly proportional to the valve lift
65. Which of the following is not true for diamond?
Correct : D. It is ductile
66. Which of the following material connot be forged?
Correct : A. Cast iron
67. For cylindrical grinding the peripheral speed will be of the order of
Correct : E. 1800 m/min
68. Generally the pattern used in manufacturing cast iron pipes are
Correct : E. None of the above
69. Which of the following non-traditional machining process will have inferior surface finish as compared to the remaining processes?
Correct : B. Plasma arc machining
70. The type of bearing suitable for high temperature applications where lubrication is impossible and where corrosion or chermical action limits choice of material, would be
Correct : A. Carbon graphite bearing
71. The selection of non-traditional machining process for a particular application depends on
Correct : E. All of the above
72. The cutting speed is usually low in case of
Correct : C. Castings
73. Continuous chips may be formed while machining
Correct : A. Ductile material
74. Solder contains
Correct : A. Lead and tin
75. A swab is
Correct : A. A tool used in foundry for moistening the sand
76. Hardness tester used for determining the hardness of a core is bearly identical to which of the following?
Correct : C. Brinell hardness tester
77. In gang milling
Correct : E. More than one cutter is simultaneously used
78. A gagger is
Correct : B. A, L shaped metal accessory used in floor moulds to support hanging bodies of sand in cope
79. Which of the following is gear finishing process?
Correct : D. All of the above
80. Abrasive GC indicates
Correct : D. Green grit SiC
81. The primary detector in a pressure gauge is usually
Correct : D. Bourdon tube
82. Which type of gears can be manufactured by extrusion process?
Correct : C. Helical gears
83. Chip breaker is
Correct : A. an obstruction attached to face of the tool
84. Point angle of 135 to 150? is used on drills while drilling
Correct : D. Any of the above
85. Back rake angle while turning brass is
Correct : E. 0?
86. The cutting tool is
Correct : B. Parting tool
87. The standard taper provided on the tapered shank of drills is known as
Correct : B. Morse taper
88. A gear has a pitch diameter of 5.732 inches and circular pitch
Correct : A. 5
89. Which of the following material is difficult to be spot welded?
Correct : D. Copper
90. Hardness of diamond can be determined by
Correct : D. None of the above
91. In case of turning or milling, the surface roughness is expected to be in the range
Correct : D. 100 to 250
92. True centrifugal casting is used to
Correct : E. Cast objects symmetrical about an axis
93. While using high speed steel tools, the cutting speed will be highest for which of the following steel?
Correct : E. Mild steel
94. If a piece of steel is reheated to a temperature of 200?C to 250?C immediately after quenching, the process is known as
Correct : D. Tempering
95. Spot facing is
Correct : E. Mahining of spol on the surface of a part to furnish a flat bearing or the head of a holt or nut
96. Hollow punches are used for making holes upto
Correct : A. 10 mm and above
97. A plug gauge is used for measuring
Correct : D. Cylindrical bores
98. Angle plate is
Correct : A. Used for measurement of angles
99. Ablation mechanism is used in which of the following machining process?
Correct : B. Chemical machining
100. A photo-electric device in which the resistance of the metal changes directly proportional to the ligh striking on it is known as