Junior Instructor Machinist - Industrial Training 549/2017 Answer Key 105/2018

machinist

Post: Junior Instructor Machinist
Department: Industrial Training
Category Code: 549/17
Question Paper: 105/18
Qualification: S.S.L.C + National Trade Certificate; Diploma in the appropriate branch of Engineering
Date of Test: 15-10-2018


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  1. V-blocks are available in grades of
    • 0 and 1
    • 1 and 2
    • A1 and A2
    • A and B

  2. Where is pin hook spanner used?
    • Circular nut having slot
    • Hexagonal nut
    • Square nut
    • None of these

  3. The best way of avoiding accident is by
    • Doing work in ancient way
    • Observing safety rules related to job, machine and workpiece
    • Doing work in one’s own way
    • Using safety equipment

  4. A 6H7 holes is to be reamed in a steel workpiece. What size of drill will be required?
    • 5.5 mm
    • 5.8 mm
    • 6.0 mm
    • 6.2 mm

  5. Gunmetal is an alloy of
    • copper, tin and zinc
    • copper, lead, and zinc
    • iron, zinc, and nickel
    • aluminum, lead, and nickel

  6. An oily floor should be cleaned by
    • Cotton waste
    • Putting water
    • Putting sawdust
    • Spraying carbon dioxide or sand

  7. The point angle of twist drill depends upon the
    • cutting speed
    • type of drilling machine
    • size of drill
    • material to be drilled

  8. Carbon content in cold chisel is
    • 0.6 to 0.7%
    • 1.2 to 1.4%
    • 0.3 to 0.5%
    • 0.9 to 1.1%

  9. The movable jaw of a bench vice is not moving even through the spindle is turned
    • fixed and movable jaw are over tight
    • spindle pin is broken
    • spring is not functioning
    • threads on spindle are slightly worn out
    Question Error

  10. Drill chucks are held on the machine spindle by means of
    • chuck nut
    • drift
    • draw in bar
    • arbor

  11. For machining a job on the shaper the length of the stroke should be
    • equal to that job length.
    • more than job length.
    • less than the job length.
    • maximum length of stroke.

  12. In a crank type shaping machine the length of the stroke can be increased or decreased by rotating the
    • Vertical lead screw
    • Horizontal lead screw
    • Radial lead screw
    • Connecting rod

  13. Quick return mechanism is used in
    • milling machine
    • shaper
    • welding machine
    • grinding machine

  14. The type of file used for woodwork is
    • single cut file
    • double cut file
    • rasp cut file
    • None of these

  15. The feed of shaper takes place
    • at the middle of cutting stroke
    • at the middle of return stroke
    • at the start of return stroke
    • at the start of cutting stroke
    Question Error

  16. A carbon steel piece is heated just above 730°C, maintained at that temperature for a few hours and then slowly cooled. What heat treatment process is carried out?
    • Normalizing
    • Case hardening
    • Hardening
    • Annealing
    Question Error

  17. Which among the following locators is best suitable for location of a round shaped job?
    • Pin type locator
    • Wedge type locator
    • Vee locator
    • Adjustable stop locator

  18. The root of ISO metric thread is
    • flat
    • round
    • sharp corner
    • None of these

  19. Grade-00 slip gauge is used in
    • Workshop by operator
    • Inspection room
    • Calibration
    • Neither Workshop by operator nor Inspection room

  20. Metric outside micrometer has a threaded spindle with a pitch is
    • 0.5 mm
    • 0.25 mm
    • 0.02 mm
    • 0.01 mm

  21. What is the hardening temperature for HSS tool?
    • 1250°C
    • 950°C
    • 850°C
    • 750°C

  22. Mass-produced component should be interchangeable, one of the following is the most important factor required to achieve the interchangeability in mass production :
    • Dimensional accuracy
    • Geometrical accuracy
    • Standardization
    • Surface finish

  23. The symbol ∇ indicates the value of surface finish
    • 40 to 80 microns
    • 16 to 40 microns
    • below 16 microns
    • None of these

  24. Reciprocating movement of the table in planer is obtained by
    • Loose and fast pulleys
    • Worm and worm wheel
    • Rack and gear
    • Cam drive

  25. The top and sides of the table of shaper usually have
    • L-types slots
    • T-types slots
    • U-types slots
    • I-types slots

  26. Which one of the planning machine has only one column?
    • Pit planning machine
    • Plate planning machine
    • Hydraulic planning machine
    • Open side planning machine

  27. Which of the following washer is used where the loosening of bolts due to vibrations or shock are more likely to be?
    • Plain washer
    • Spring washer
    • Tap washer
    • Fibre washer

  28. Nut is a
    • temporary fastener
    • semi-permanent fastener
    • permanent fastener
    • None of these

  29. Which of the following instrument is used to check the hills and valley for the surface of the job?
    • By ammeter
    • By dial gauge
    • By barometer
    • By Taly-surf

  30. Jobs are placed in ash or _____ for annealing.
    • limestone
    • coke
    • pig iron
    • All of these

  31. The included angle of acme thread is _____ degree.
    • 30
    • 29
    • 47½
    • 60

  32. The percentage of carbon in grey cast iron is _____
    • more than 6.67%
    • less than 2.1%
    • more than 2.1%
    • None of these

  33. Clearance between the mating parts is measured by which of the following gauge?
    • Dial gauge
    • Plug gauge
    • Feeler gauge
    • Caliper gauge

  34. The nut used to fix blade in hacksaw frame is _____
    • Dome nut
    • Thumb nut
    • Wing nut
    • Castle nut

  35. Which drilling machine is used in mass production?
    • Bench type drilling machine
    • Pillar type drill press
    • Portable drilling machine
    • Gang type drilling machine

  36. In normalizing process, hot steel is made to cool by
    • immersing it in oil
    • keeping it in still air at room temperature
    • leaving it in cold air
    • immersing it in water

  37. _____ marking media takes too much time to get dry and it makes clear lines.
    • Prussian blue
    • Chalk
    • Copper sulphate
    • None of these

  38. With the help of vernier bevel protractor any angle can be measure up to the accuracy of the _____ of 1 degree.
    • 10th parts
    • 12th parts
    • 9th parts
    • 4th parts

  39. The standard range of sizes covered in the BIS system of limit and fits are
    • 0 to 10 mm
    • 0 to 100 mm
    • 25 to 400 mm
    • 0 to 500 mm

  40. It is used for aligning the vice with shaping machine table in position.
    • Steel rule
    • Straight edge
    • Dial test indicator
    • Tee bolt

  41. The tolerance of a hole is the difference between the
    • maximum hole and minimum shaft
    • minimum hole and maximum shaft
    • maximum hole and the maximum shaft
    • maximum hole and the minimum hole

  42. Zero error of a 50-75 mm outside micrometer can be checked with
    • dial test indicator
    • vernier height gauge
    • feeler gauge
    • test piece

  43. In abrasive jet machining, the nozzle mounted in the fixture is made up of
    • High Speed Steel
    • Aluminium Oxide
    • Silicon Carbide
    • Tungsten Carbide

  44. Which thread is used in lead screw of lathe?
    • Acme thread
    • Butters thread
    • Square thread
    • Knuckle thread

  45. Which type headstock have back gear mechanism?
    • All geared headstock
    • Stepped cone pulley headstock
    • All of these
    • None of these

  46. What is the purpose of clearance angle of lathe cutting tool?
    • To guide the chip away
    • To avoid overheating
    • To prevent the tool rubbing with the work
    • To break the lengthy chips

  47. For turning the work between centers, both faces of the workpiece are drilled with
    • Twist drill
    • Countersunk
    • Counterbore
    • Centre drill

  48. In lathe the follower rest is fixed on
    • Lathe bed
    • Saddle
    • Tailstock
    • Carriage

  49. Which mechanism is used to connect carriage to lead screw?
    • Rack and pinion
    • Screw cutting mechanism
    • Half nut mechanism
    • Back gear mechanism

  50. In a screw thread lead is equal to _____
    • Pitch
    • Pitch X No. of start
    • Pitch X Major diameter
    • Pitch X Minor diameter

  51. Length of sine bar is
    • Length of face
    • Length between outside of two rollers
    • Length between Centre of two rollers
    • Length between inside of two rollers

  52. Which of the following is not a good quality cutting fluid?
    • High heat absorption
    • High flash point
    • Good lubricating quality
    • High viscosity

  53. Which one of the following is an example of gravity feed lubricating system?
    • Stauffer screw down greaser
    • Wick feed lubricator
    • Oil can
    • Grease gun

  54. In CNC programming, code represents feed in mm/rev. is
    • G70
    • G71
    • G95
    • G96

  55. In CNC machine, which controls system have the facility to feedback information to the control?
    • Open loop control system
    • Closed loop control system
    • Both Open loop control system and Closed loop control system
    • None of these

  56. The rotary movement in z-axis of a CNC machine is called _____
    • A-axis
    • B-axis
    • C-axis
    • D-axis

  57. In horizontal milling machine cutters are mounted on
    • Spindle
    • Draw bar
    • Arbor
    • Saddle

  58. The radial distance between pitch circle and outside circle of a spur gear is known as _____
    • Chordal addendum
    • Dedendum
    • Circular pitch
    • Addendum

  59. What is the maximum table tilting angle of a universal milling machine?
    • 45°
    • 55°
    • 60°
    • 75°

  60. The ratio between pitch circle diameter in millimetres to number teeth of a spur gear is known as
    • Circular pitch
    • Diametrical pitch
    • Addendum
    • Module

  61. If ______ is not tightened properly, the draw bolt will get loosened.
    • Arbor
    • Lock Nut
    • Key
    • Arbor support

  62. While using the long arbor, the arbor will sag if _____ is not used.
    • Coller
    • Front brace
    • Arbor support
    • Drawbar

  63. Which number involute gear cutter is used to cut rack?
    • 1
    • 2
    • 3
    • 4

  64. Which type of slots is provided on the milling machine table for clamping workpiece or work holding devices?
    • J-slot
    • T-slot
    • C-slot
    • E-slot

  65. In milling process the work is feeding against the direction of rotation of the cutter, the method is known as
    • Straight milling
    • Opposite direction milling
    • Up milling
    • Down milling

  66. What is the cutting speed of a side and face milling cutter having outer dia. 125 mm and running at an rpm of 80?
    • 31.4 M/min.
    • 62.8 M/min.
    • 31.4 mm/min.
    • 62.8 mm/min.

  67. Formula of simple indexing is
    • N/40
    • 40/N
    • 30/N
    • N × 30

  68. What is the pitch circle diameter of a spur gear of two module 47 teeth?
    • 94 mm
    • 98 mm
    • 102 mm
    • 90 mm

  69. Pitch of the table lead screw of milling machine is 5 mm, while linear indexing to get 1 mm movement how many times the crank of indexing head will turn?
    • 8
    • 5
    • 11
    • 6

  70. Which mechanism used in indexing head?
    • Nut and bolt
    • Worm and worm gear
    • Indexing plate
    • Rack and pinion

  71. A grinding wheel is specified as 32 A 46 H 8 V. In this, the letter ‘V’ represented for
    • Grade
    • Grid size
    • Structure
    • Bond

  72. In centerless grinding the longitudinal feed rate can be varied by changing _______
    • Angle of inclination of control wheel
    • Angle of inclination of grinding wheel
    • Angle of inclination of work rest
    • Movement of work rest

  73. Which bond is used for heavy duty, large diameter wheels, a fine finish is required?
    • Shellac bond
    • Silicate bond
    • Rubber bond
    • Resinoid bond

  74. The grain size of grinding wheel is 24, it is a _____ grain wheel.
    • Coarse
    • Medium
    • Fine
    • Very Fine

  75. In the marking system of grinding wheel, silicon carbide wheel is denoted by which letter?
    • O
    • A
    • S
    • C
    Question Error

  76. While grinding soft metals, the chips are get clogged between the abrasive particle of the wheel. This condition is known as
    • Clogging
    • Glazing
    • Loading
    • Pinning

  77. Tool used to dressing the grinding wheel is
    • File card
    • Wire brush
    • Wheel balancer
    • Wheel dresser

  78. The process of shaping of the grinding wheel to make it run concentric with axis is known as
    • Dressing
    • Glazing
    • Loading
    • Truing

  79. In centre less grinder, for longitudinal feed the control wheel inclined at an angle of
    • 1° – 7°
    • 9° – 15°
    • 10° – 13°
    • 7° – 10°

  80. When new carbide tipped tools required re-sharpening it is first ground to rough form with
    • Diamond wheel
    • Silicon carbide
    • Sand stone
    • Green grit silicon carbide

  81. The borderline between India and China is
    • Radcliffe Line
    • McMahon Line
    • Durand Line
    • Palk Strait

  82. The largest Union Territory of India is
    • Puducherry
    • The Lakshadweep
    • The Andaman & Nicobar Islands
    • Daman & Diu

  83. The National River of India is
    • The Ganga
    • The Sindhu
    • The Yamuna
    • The Brahmaputra

  84. First Chairman of the Planning Board in India is
    • Dadabhai Naoroji
    • V.K.R.V. Rao
    • Jawaharlal Nehru
    • M.N. Roy
    Question Error

  85. Which of the following Indian Prime Minister introduced the Twenty Point Programme?
    • Indira Gandhi
    • Manmohan Sing
    • Narasimha Rao
    • Jawaharlal Nehru

  86. Who introduced the Subsidiary Alliance System in India?
    • Lord Dalhousie
    • Lord Wellesley
    • Lord Canning
    • Lord Cornwallis

  87. First Martyr of the Revolt of 1857 is
    • Nana Saheb
    • Jhansi Rani
    • Mangal Pandey
    • Tantia Tope

  88. The first President of Indian National Congress is
    • A.O. Hume
    • Dadabhai Naoroji
    • W.C. Banerjee
    • C. Sankaran Nair

  89. Which of the following strike is NOT led by Mahatma Gandhi?
    • Non-Co-operation Movement
    • Civil Disobedience Movement
    • Quit India Movement
    • Home Rule Movement

  90. Who composed the ‘Mushakavamsakavya’?
    • Banabhatta
    • Atula
    • Kautilya
    • Kalhana

  91. The social reformer of Kerala, who is known as ‘Vidyadhiraja’
    • Vaikunda Swamikal
    • K.P. Kesava Menon
    • Chattampi Swamikal
    • Mannath Padmanabhan

  92. Which of the following person translated the autobiography of Karl Marx into Malayalam?
    • Swadeshabhimani Ramakrishna Pillai
    • E.M.S. Namboodiripad
    • A.K. Gopalan
    • E.K. Nayanar

  93. The social reformer who is known as ‘Bharatha Kesari’ is
    • T.K. Madhavan
    • Mannath Padmanabhan
    • K. Kelappan
    • P. Krishnapillai

  94. After, which of the following consecration of Lord Shiva, Sree Narayana Guru replied, “I consecrated the Ezhava Shiva and not the Brahmin Shiva”?
    • Sivagiri
    • Aruvippuram
    • Thalassery
    • Aluva

  95. The Sadhujana Paripalana Sangham was founded under the leadership of
    • Ayyankali
    • Dr. Palpu
    • Vagbhadananda Gurukkal
    • Sahodaran Ayyappan

  96. The present Chief Election Commissioner of India is
    • Umesh Sinha
    • Ashok Lavosa
    • Om Prakash Rawat
    • Sunil Arora

  97. The Head Quarters of I.S.R.O. is at
    • Bangalore
    • Mumbai
    • Delhi
    • Sriharikota

  98. The Australian cricketer who lost captaincy due to ball tampering scandal recently
    • David Warner
    • Steve Smith
    • Cameron Bancroft
    • Mitchel Starc

  99. The first Nigerian actor to play a leading role in an Indian Film is
    • Samuel Abiola Robinson
    • Femi Adebayo
    • Yemi Ajibade
    • Ken Erics

  100. The popular Science book on cosmology ‘A Brief History of Time’ is the work of
    • Issac Newton
    • Charles Darwin
    • Stephen Hawking
    • Albert Einstein

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