Junior Instructor Turnor - Industrial Training 551/2017 Answer Key 103/2018

lathe turnor

Post: Junior Instructor (Turnor)
Department: Industrial Training
Category Code: 551/17
Question Paper: 103/18
Qualification: SSLC + National Trade Certificate (NTC) in electrical + 3 year experience; Diploma in the appropriate branch of Engineering
Date of Test: 05-10-2018


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  1. The shape of an information sign is __________
    • Circular
    • Triangular
    • Square
    • Oval

  2. Which one of the fire extinguishers are suitable for a live electrical fire?
    • Halon
    • Water
    • Foam
    • Liquefied Chemical

  3. Which colour code used to waste bin for segregation of plastic material?
    • Blue
    • Green
    • Red
    • Yellow

  4. A nut is to be made for a screw of M 10 × 1.5. What should be the size of drilled hole?
    • 8.5 mm
    • 9.0 mm
    • 9.5 mm
    • 10.5 mm

  5. If the zero graduation of thimble division of an outside micrometer is below the datum line, when the measuring face of the micrometer is in contact, the error is __________
    • Positive
    • Negative
    • Zero
    • None of these

  6. The tailstock barrel has an internal taper, which of the following standard taper?
    • Metric taper
    • Morse taper
    • Jarno taper
    • Brown and sharp taper

  7. Which among the following parts of a lathe should have high compressive strength?
    • Main spindle
    • Lead screw
    • Lathe bed
    • Sliding gears in headstock

  8. To hold irregularly shaped workpiece on a lathe which accessories used?
    • Three jaw chuck
    • Driving plate
    • Clutch plate
    • Faceplate

  9. Which of the following is not a part of a centre lathe?
    • Feed rod
    • Saddle
    • Arbor
    • Lead screw

  10. Which type of rule is used for making and measuring patterns and hot jobs handled by a blacksmith?
    • Narrow rule
    • Shrink rule
    • Hook rule
    • Short rule

  11. Which type of chip formation would be the best for turning mild steel?
    • Long curly chip
    • Segmented chips
    • I shaped chip
    • Spiral chip

  12. The function of the cutting fluid in the lathe operation is
    • Cleaning and lubricating
    • Chip removal and lubricating
    • Better finish and lubricating
    • Cooling and flushing chip away from the cutting tool

  13. Which type of a chisel is used for squaring material at the corner of a job?
    • Web chisel
    • Cross cut chisel
    • Round nose chisel
    • Diamond point chisel

  14. Punch used for punching on marking line is
    • Bell punch
    • Prick punch
    • Dot punch
    • Centre punch

  15. A file card is used for
    • Cleaning the workpiece
    • Cleaning the file teeth
    • Renewing the file teeth
    • Cleaning the chip

  16. By using taper turning attachment taper can be turned with a setting angle upto
    • 10°
    • 20°
    • 25°
    • 30°

  17. Which one of the following standard taper is self holding type?
    • Morse taper
    • Metric taper
    • Brown and sharp taper
    • Jarno taper

  18. How the blank size for external thread is decided?
    • Blank diameter greater than 1/10 of the pitch of the thread
    • Blank diameter equal to the nominal diameter of the thread
    • Blank diameter is less than 1/10 of the pitch of the thread
    • Major diameter of the thread

  19. Least count of Vernier Bevel protractor is __________
    • 1 MSD – 1 VSD
    • 1 VSD – 1 MSD
    • 1 VSD – 2 MSD
    • 2 MSD – 1 VSD

  20. The different diameters are turned on different axis, it is said to be _________.
    • Eccentric
    • Concentric
    • Taper
    • Plane

  21. The distance from one point of the thread to the other point of next corresponding thread is called
    • Lead
    • Angle
    • Crest
    • Pitch

  22. A fixture is used for _________
    • Grinding the tool
    • Holding the workpiece
    • Setting the workpiece
    • None of these

  23. The least count of Vernier height gauge in the metric system is _________
    • 0.05 mm
    • 0.1 mm
    • 0.02 mm
    • 0.001 mm

  24. What kind of welding machine are used in site welding?
    • DC welding generator
    • AC welding generator
    • AC/DC welding generator
    • Oil cooled generator

  25. The electrode holder is made of __________
    • Copper
    • Fibre
    • Plastic
    • Rubber

  26. Which type of thread is used for transmitting power?
    • ‘V’ thread
    • BSW thread
    • Square thread
    • BA thread

  27. In lathe form tools are used to produce __________.
    • Cylindrical surface
    • Tapered surface
    • Thread
    • The surfaces which are neither cylindrical nor tapered

  28. The chemical formula of Acetylene is __________
    • C2H4
    • CH3
    • C2H6
    • C2H2

  29. For making purpose, a vernier height gauge must be used on the __________.
    • Bed of machine tool
    • Square block
    • Surface plate
    • Any flat surface

  30. The purpose of chasing dial on lathes is to achieve __________
    • cutting on tapered threads
    • picking up the thread accurately at the beginning of each cut
    • cutting on multiple threads
    • plunge cut

  31. The melting point of copper is _________
    • 1083 °C
    • 1150 °C
    • 659 °C
    • 850 °C

  32. Which of the following tools is most suitable for very hard and brittle material?
    • H.S.S.
    • Cast-Cobalt alloy
    • Carbide
    • None of these

  33. A soldering iron bit is made of __________
    • Brass
    • Tin
    • Steel
    • Copper

  34. High speed steels are most suitable for __________.
    • High positive rake angle tools
    • High negative rake angle tools
    • Zero rake angle tools
    • None of these

  35. Ceramic tools are made of __________ in a mould.
    • Chromium, vanadium and molybdenum
    • Aluminum oxide powder
    • Carbon, cobalt and tungsten
    • None of these

  36. Which of the top rake angle of cutting tool, cutting in bronze?
    • 30°
    • 13°
    • 10°

  37. The lathe cutting tool is set above the center line of the job. What is the reason?
    • Smooth finish
    • Rough finish
    • Fine smooth finish
    • None of these

  38. Segmental chips are formed during machining?
    • Mild steel
    • High carbon steel
    • High speed steel
    • Cast iron

  39. Which type of cutting tools have wide application on lathes?
    • Single point
    • Multi point
    • Both single point and multi point
    • None of the mentioned

  40. The flux commonly used in brazing is
    • Zinc chloride
    • Borax
    • Rosin
    • Ammonium chloride

  41. As per BIS TCVM 12 03 06 is the standard specification of carbide inserts, in this letter C stands for
    • Shape of inserts
    • Tolerance class
    • Chip breakers characteristics
    • Clearance angle

  42. An example of splash feed lubrication system
    • Wick feed lubrication
    • Oil cup
    • Ring oiling
    • Grease gun

  43. Which grinding wheel used grind hard material?
    • Soft grade wheel
    • Medium grade wheel
    • Hard grade wheel
    • None of these

  44. As per BIS A16P5VBE is standard marking of grinding wheel, in this letter P stands for
    • grade of wheel
    • type of bond
    • structure of wheel
    • abrasive type

  45. Glazing is the one of the defects found while grinding, cause of this defects is
    • using soft grade wheel on hard material
    • using hard grade wheel on hard material
    • using hard grade wheel on soft material
    • None of these

  46. An example of semi-fluid lubricant
    • Graphite
    • Soluble oil
    • Grease
    • Wax

  47. To convert the linear motion of the plunger of a dial test indicator to rotary motion of the pointer, which one of the following mechanisms used?
    • Quick return mechanism
    • Rack and pinion mechanism
    • Screw thread mechanism
    • Hydraulic mechanism

  48. Which of the following is a type of maintenance?
    • Preventive
    • Predictive
    • Corrective
    • All of these

  49. Lead of the 3 start thread is 4.5 mm; Pitch of the thread is _________
    • 1.5 mm
    • 4.5 mm
    • 3 mm
    • 13.5 mm

  50. While using a three point internal micrometre, before taking measurement the zero setting has to be done with __________
    • Slip gauge
    • Setting ring
    • Dial test indicator
    • Setting spanner

  51. Which screw is used to hold the tool makers button in position on the workpiece?
    • Self tapping screw
    • M8 screw thread
    • 4 BA thread screw
    • All of these

  52. Vice like device which can be set in place of compound rest. It has vertical feed and graduated dial for swiveling
    • Grinding attachment
    • Taper turning attachment
    • Copying attachment
    • Milling attachment

  53. For getting high degree of positional accuracy while boring ___________ device used for setting the job.
    • Dial test indicator
    • Surface gauge
    • Toolmakers button
    • Plunger dial

  54. By which method multi start thread cuts on lathe?
    • split die
    • using chaser
    • die
    • single point tool

  55. Which operation cannot performed with copying attachment in lathe?
    • Thread cutting
    • Forming turning
    • Taper turning
    • Radius grooving

  56. The microstructure generally found in hardened steel is
    • Austenite
    • Martensite
    • Pearlite
    • Cementite

  57. To obtain fine grains and uniform structure cold worked steel and casting are subjected to which heat treatment process?
    • Normalizing
    • Annealing
    • Tempering
    • Case hardening

  58. In which of the following heat treatment process localized heating is possible?
    • Annealing
    • Hardening
    • Induction hardening
    • Austempering

  59. The surface roughness value of 12.5 microns indicates by the corresponding roughness grade symbol
    • N12
    • N1
    • N10
    • N11

  60. A steel which contains just 0.8% carbon is called
    • Eutectoid steel
    • Hypoeutectoid steel
    • Hypereutectoid steel
    • Ferrite steel

  61. When irregularly shaped workpiece mounted in the lathe spindle with the help of a faceplate, the work has to be properly balanced otherwise it will result
    • Poor surface finish of the job
    • Excessive vibration
    • Excessive power consumption
    • Both Poor surface finish of the job and Excessive vibration

  62. Dead stops and trips on Capstan and Turret lathes are used to
    • Control the movement of the cutting tools
    • Increase the cutting speed
    • Reduces the tools needed
    • Improve the surface finish

  63. The type of tool holder used for external diameter turning with good surface finish in a Capstan and Turret lathe is
    • Knee turning tool
    • Roller steady turning tool holder
    • Flanged tool holder
    • Quick acting tool holder

  64. Name the Turret lathe tool holder, which can hold a boring bar, drill, reamer etc.
    • Box steady turning tool holder
    • Straight cutting tool holder
    • Multiple cutter holder
    • Flange tool holder

  65. The component of surface texture on which the roughness is super imposed is called
    • Surface finish
    • Secondary texture
    • Primary texture
    • Waviness

  66. Which of the following collet can maintain exact length of component while machining on Capstan and Turret lathe?
    • Draw back type
    • Push out type
    • Push length type
    • Master collet

  67. Gunmetal widely used for making bearing, it contains
    • Copper, Tin and Zinc
    • Copper, Lead and Zinc
    • Copper, Aluminium and Zinc
    • Copper, Nickel and Zinc

  68. The action not possible in Manual Data Input (MDI) function mode in a CNC machine is
    • Execution of M. Code
    • Axis movement
    • Spindle rotation
    • Automatic operation of any machining program

  69. The preparatory function code G03 indicates
    • Linear interpolation
    • Circular interpolation CCW
    • Circular interpolation CW
    • Automatic return to reference point

  70. The auxiliary function M05 indicates
    • Program stop
    • Work clamp
    • Spindle rotation stop
    • Spindle stop

  71. Which of the following is not available in the CNC Lathe machine?
    • Recirculating ball bearing
    • Non-metallic liners
    • Servo motors
    • Tailstock

  72. The dimensional value entered to position tool cutting edge in relation to programmed point in a CNC machine program is called
    • Tool offset
    • Machine offset
    • Machine home position
    • Operator offset

  73. Which of the following work holding device helps to bring each hole accurately below the drill spindle axis one by one for drilling operation in a pillar type drilling machine?
    • Box type table
    • Machine vise
    • Plain table with T slots
    • Compound table

  74. The cylindrical enlargement to a certain depth of a drilled hole to accommodate socket head screw is called
    • Counterboring
    • Spot facing
    • Countersinking
    • Reaming

  75. Normally the length of a spanner is about
    • 8 times the width of jaw opening
    • 10 times the width of jaw opening
    • 12 times the width of jaw opening
    • 15 times the width of jaw opening

  76. The type of screw driver preferred to use in limited space and have little access areas :
    • Ratchet screw driver
    • Philips screw driver
    • Stumpy screw driver
    • Light duty screw driver

  77. When two parts are joined with an adhesive bonding, the strength of the adhesive bond depends upon
    • Adhesion
    • Cohesion
    • Both Adhesion and Cohesion
    • Amount of heat applied

  78. Which of the following bolt is used in machine tool tables?
    • Hexagonal headed bolt
    • T-Headed bolt
    • Hook bolt
    • Eye bolt

  79. Set screws used to prevent relative movement between two pieces have thread
    • throughout its length
    • on bottom half portion only
    • at the top, bottom and plain middle portion
    • on the top half portion only

  80. The nut widely used in steam engines and locomotives which are subjected to sudden shock loads
    • Slotted nut
    • Simmon’s lock nut
    • Castle nut
    • Grooved nut

  81. What is the name of the political party founded by former Pakistan Cricket team captain Imran Khan?
    • Pakistan Muslim League
    • Tehrik-i-Insaf
    • Pakistan Awami League
    • Pakistan People’s Party

  82. The city which is known as the Cultural Capital of Kerala
    • Thiruvananthapuram
    • Kannur
    • Thrissur
    • Kollam

  83. Headquarters of Asian Development Bank is in
    • Manila
    • Kuala Lumpur
    • Jakarta
    • Hanoi

  84. World Press Freedom Day is on
    • 14th April
    • 3rd May
    • 15th August
    • 21st October

  85. The newspaper “Dawn” is published in
    • China
    • Sri Lanka
    • Pakistan
    • Bangladesh

  86. The national leader who described the Non-Co-operation Movement as a Himalayan Blunder
    • C.R. Das
    • Jawaharlal Nehru
    • Dr. Ambedkar
    • Mahatma Gandhi

  87. The police officer from Kerala, who served as the Director of Research and Analysis Wing (RAW)
    • Jacob Thomas
    • Rishiraj Singh
    • Hormiz Tharakan
    • T.P. Senkumar

  88. The Taluk in Kerala which has the longest coastline
    • Thalassery
    • Ponnani
    • Ambalapuzha
    • Cherthala

  89. Which is the smallest neighboring country of India?
    • Burma
    • Bhutan
    • Nepal
    • Sri Lanka

  90. Gold coast is the old name of
    • Kenya
    • Zambia
    • Ghana
    • Nauru

  91. The first foreigner to become the President of Indian National Congress
    • William Wedderburn
    • George Yule
    • William Dighby
    • C.F. Andrews

  92. Who coined the slogan “India For Indians”?
    • Raja Rammohan Roy
    • Swami Vivekananda
    • Swami Dayananda Saraswathi
    • Jyotiba Phule

  93. “Tsunami” is a word in which language?
    • Arabic
    • Japanese
    • Korean
    • Chinese

  94. The state which is known as the “Granary of India”
    • Telangana
    • Uttar Pradesh
    • Punjab
    • Rajasthan

  95. National Book Trust was founded in the year
    • 1952
    • 1957
    • 1961
    • 1968

  96. Who is known as the Father of Internet?
    • Glen Raikort
    • Charles Babbage
    • John Biard
    • Remington

  97. The planet which remains very close to the Earth
    • Mercury
    • Mars
    • Venus
    • Neptune

  98. The British Governor-General who prepared the first census of India
    • Lord Curzon
    • Lord Mayo
    • Lord Hardinge
    • Lord Ripon

  99. Panama Canal acts as a link between which of the following oceans?
    • Atlantic and Pacific
    • Mediterranean and Pacific
    • Arctic and Pacific
    • Red Sea and Pacific

  100. The freedom fighter who was a close associate of Mahatma Gandhi during the Bardoli Satyagraha of 1928
    • Lal Bahadur Shastri
    • Rajendra Prasad
    • Vallabhbhai Patel
    • Jawaharlal Nehru

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