Junior Instructor Operator Advanced machine Tools 374/2017 Answer Key 112/2018

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Post: Junior Instructor Operator Advanced machine Tools
Department: Industrial Training
Category Code: 374/17
Question Paper: 112/18
Qualification: S.S.L.C + National Trade Certificate; Diploma in the appropriate branch of Engineering
Date of Test: 22-11-2018


If you find mistakes, comment below



  1. Which one is class ‘C’ fire?
    • kerosene fire
    • wood fire
    • gas fire
    • electric fire

  2. What is purpose of settings of teeth in hacksaw blade?
    • cutting surface in very smooth
    • allow free movement of the blade
    • long life in blade
    • avoid heating in blade

  3. Which chisels in used to separate metal after chain drilling?
    • web chisel
    • diamond point chisel
    • flat chisel
    • cross cut chisel

  4. The cutting angle of twist drills bits in general purpose :
    • 100°
    • 110°
    • 60°
    • 118°

  5. Whit worth thread has an included angle of :
    • 55°
    • 60°
    • 45°
    • 90°

  6. Which is the Blank size of M12x1.75 mm?
    • 10.25 mm
    • 11.82 mm
    • 11.25 mm
    • 10.5 mm

  7. 30 H7/g6; –––––––––– is represented by ‘g’.
    • Hole
    • Grade
    • Shaft
    • Clearance

  8. What is the formula of calculating drill size for reamer?
    • Reamed size – (Undersize + oversize)
    • Reamed size – (Undersize x oversize)
    • Reamed size – (oversize – Undersize)
    • Reamed size + (Undersize – oversize)

  9. The included angle of ‘V’ block :
    • 90°
    • 60°
    • 55°
    • 80°

  10. Lip clearance angle in twist drill :
    • 10° – 12°
    • 8°    – 12°
    • 11° – 12°
    • 7°    – 8°

  11. Benchvice is specified :
    • Distance of two jaws
    • Length of jaw
    • Width of jaw
    • Length of vice

  12. In 5 S concept, 5 ‘S’ stands for ––––––––––.
    • Sort, Set, Smooth, Shine, Standardize
    • Sort, Show, Shine, Standardize, Sustain
    • Sort, Set, Show, Shine, Sustain
    • Sort, Set, Shine, Standardize, Sustain

  13. External thread cutter is known as :
    • die
    • tap
    • die nut
    • reamer

  14. In marking of grinding wheel the shellac bond is represented by which letter :
    • S
    • E
    • B
    • Y

  15. The least count of vernier micrometer :
    • 0.01 mm
    • 0.01 inch
    • 0.001 mm
    • 0.1 mm

  16. The difference between maximum limit of size and the minimum limit of size is called :
    • actual size
    • upper deviation
    • lower deviation
    • tolerance

  17. What is the equation of find the least count of vernier bevel protractor?
    • 1MSD-1VSD
    • 1MSD-2VSD
    • 2MSD-1VSD
    • 2MSD-2VSD

  18. The single cut file has rows of teeth cut in angle of :
    • 50°
    • 60°
    • 75°
    • 80°

  19. Which of the following letter represented a grinding wheel of medium grade?
    • D
    • H
    • Y
    • A
    Question Error

  20. The top surface of joint the flank of the same thread is :
    • Root
    • Flank
    • Pitch
    • Crest

  21. A tumbler gear is provided for :
    • Change the direction of feed
    • Change the direction of the chuck
    • Change the spindle speed
    • None of these

  22. Which soluble cutting oil gives good performance in hard water?
    • SERVO CUT ‘S’
    • SERVO SYNTH5
    • SERVO CUT XL
    • SERVO CUT CLEAR

  23. Oblique cutting is most suitable for :
    • Finish turning
    • Knurling
    • Facing
    • Rough turning

  24. The cause for this defect is the tool’s cutting edge being blunt or getting blunt during its travel and the carriage not being locked; which defect is this?
    • Pip in centre
    • Convex face
    • Concave face
    • Rough finish in turning

  25. It is advisory that the tool to be used for finishing; the tool should have :
    • Sharper nose
    • Larger nose radius than normal
    • Flat nose
    • Flat nose than normal

  26. The recommended cutting speed for turning medium carbon steel is :
    • 35 to 50 m/min
    • 30 to 40 m/rev
    • 30 to 35 m/min
    • 35 to 50 mm/min
    Question Error

  27. When carbide tools are used –––––––––– higher cutting speed than that of the HSS tools may be chosen.
    • 4 to 5 times
    • 5 to 6 times
    • 1 to 2 times
    • 3 to 4 times

  28. Which component is used for turning lengthy hexagonal bars along with fixed steady rest?
    • Angle plate
    • Mandrel
    • Cat head
    • Magnetic chuck

  29. The percentage of carbon in high carbon steel is :
    • 0.3 to 0.7
    • 0.15 to 0.3
    • 0.4 to 0.6
    • None of these

  30. Choose the correct factor about malleable cast iron :
    • High brittle and low ductile
    • Difficult for machining
    • Cheaper than grey cast iron
    • No self-lubricating property
    Question Error

  31. Which material is used mostly for making crane hooks?
    • Mild steel
    • Wrought iron
    • Cast iron
    • Plain carbon steel

  32. Which determines the hardness or softness of abrasive wheel?
    • Strength of abrasive
    • Structure
    • Grade of Bond
    • Grit

  33. The selection of grinding wheel having hard graded bond for grinding hard metal which may results :
    • Heavy reduction of material
    • Heavy reduction from wheel
    • Grooving
    • Glazing
    Question Error

  34. Which is the example of splash method of lubrication?
    • Wick feed
    • Stauffer screw
    • Ring oiling
    • Winkley oiler

  35. Which type of milling cutter is used for milling deep narrow slots and keyways?
    • Staggered teeth side milling cutter
    • Interlocking side milling cutter
    • Half side milling cutter
    • Helical side and face milling cutter

  36. Which factor is correct about Up-Milling?
    • The feed direction of cutting Tool is same to its rotation
    • The chip thickness is zero in starting
    • The chip thickness is minimum towards the end of cut
    • The main radial force which gives downward pressure and better holding of work

  37. In Milling Machine which is the following provides extra stability to the machine?
    • Brace
    • Overarm
    • Knee
    • Column

  38. Thin cut-off wheels are made with :
    • Organic Bond
    • Inorganic Bond
    • Chemical Bond
    • None of these

  39. Choose the correct RPM for turning a job having diameter 50 mm and cutting speed is 62.85 m/min :
    • 350
    • 400
    • 450
    • 300

  40. Which is heat treatment process produces a scale free surface on work piece?
    • Induction hardening
    • Nitriding
    • Cyaniding
    • Flame hardening

  41. A closed loop control system is also known as :
    • Point to point control system
    • Straight line control system
    • Feedback control system
    • Non Feedback control system

  42. Which of the following is the advantages of CNC machine?
    • High maintenance cost
    • High investment cost
    • High accuracy and repeatability
    • High training cost

  43. Basic elements or components of NC system are
    • Program of instruction
    • Machine control unit
    • Mechanical tool or processing unit
    • All of these

  44. Compared to open control system a closed control system is :
    • Less accurate
    • Less expensive
    • More accurate
    • None of these

  45. The CNC command G 01 means :
    • Linear interpolation
    • Circular interpolation
    • Positioning in rapid
    • None of these

  46. Several machines are controlled by central computer is called :
    • CNC
    • NC
    • DNC
    • None of these

  47. The CNC command M 08 is for :
    • Coolant off
    • Coolant on
    • Chuck close
    • Door close

  48. For the spindle rotation in clockwise, the CNC code is :
    • M 04
    • M 01
    • M 03
    • M 02

  49. Which of the mode is selected to feed manually in CNC program?
    • Jog mode
    • MDI mode
    • Auto mode
    • Edit mode

  50. Which of the following is non feedback control system?
    • Open loop control system
    • Point to point system
    • Contouring system
    • Close loop control system

  51. The G code for constant surface speed in CNC milling operation :
    • G 96
    • G 95
    • G 94
    • G 97

  52. CNC machine operations are controlled by using a :
    • Cam
    • Gear
    • Belt
    • Program

  53. In CNC machine MDA mode means :
    • Machine data automatic
    • Manual data automatic
    • Manual data action
    • Machine data action

  54. In drilling operation which control system is suitable :
    • Open loop control system
    • Closed control system
    • Contouring control system
    • Point to point control system

  55. Which of the following is the disadvantages of CNC machine?
    • High accuracy
    • High investment
    • Lower tooling cost
    • Increased productivity

  56. What you mean by MPG in CNC machine?
    • Manual pulse generator
    • Machine pulse generator
    • Manual program guide
    • Machine program guide

  57. The instruction describing miscellaneous or auxiliary functions in CNC program is by :
    • M code
    • N code
    • G code
    • W code

  58. In PTP control system feed drive is only in :
    • Imaginary axis
    • X axis
    • Y axis
    • Z axis

  59. In CNC programming G code is a :
    • Auxiliary function code
    • Miscellaneous function code
    • Preparatory function code
    • None of these

  60. In CNC programming each Line of program is known :
    • Address
    • Block
    • Part
    • None of these

  61. Cutting speed is expressed in :
    • Metre per second
    • Millimetre per second
    • Millimetre per minute
    • Metre per minute

  62. For rough and heavy cut suitable speed is :
    • High speed
    • Medium speed
    • Super speed
    • Low speed

  63. The storage symbol used in process chart is :
    • Circle
    • Triangle
    • Square
    • Arrow

  64. If depth of hole is more than 10 times diameter drill then the drilling is called :
    • Plain drilling
    • Deep hole drilling
    • Centre drilling
    • None of these

  65. The process chart shows the :
    • Operation of work
    • Sequence of operation
    • Inspection method
    • None of these

  66. Which of the following operation work in slow speed?
    • Taper turning
    • Thread cutting
    • Chamfering
    • Grinding

  67. The hydraulic system use a :
    • Compressible fluid
    • Incompressible fluid
    • Compressed air
    • None of these

  68. What you mean by TPM?
    • Total productive maintenance
    • Total product maintenance
    • Total preventive maintenance
    • None of these

  69. The method of calculating the various quantities and expenditure in particular job or process is called :
    • Planning
    • Processing
    • Estimation
    • None of these

  70. Breakdown maintenance is also called :
    • Productive maintenance
    • Preventive maintenance
    • Corrective maintenance
    • None of these

  71. In turning centre the spindle axis designated as :
    • X axis
    • Y axis
    • Imaginary axis
    • Z axis

  72. In CNC machine operation work offset is also known as :
    • Geometrical offset
    • Wear offset
    • Zero offset
    • None of these

  73. The CNC lathe bed ways are made of :
    • Cast Iron
    • Wrought Iron
    • High speed steel
    • None of these

  74. The carbon percentage in high carbon steel is :
    • 0.1 to 0.25%
    • 0.3 to 0.7%
    • 0.15 to 0.3%
    • 0.7 to 1.4%

  75. The property of material to retain its hardness at elevated temperature is known as :
    • Vickers hardness
    • Cold hardness
    • Brinell hardness
    • Red hardness

  76. Milling cutter is mounded on :
    • Spindle
    • Arbor
    • Tool post
    • Saddle

  77. Which feed is used for rough cutting?
    • Large feed
    • Small feed
    • Moderate feed
    • None of these

  78. High speed steel contain :
    • 18% chromium 4% tungsten 1% vanadium
    • 18% tungsten 4% chromium 1% vanadium
    • 18% tungsten 4% vanadium 1% chromium
    • 18% vanadium 4% tungsten 1% chromium

  79. If D is the initial diameter d is the finished diameter in lathe work, then the depth of cut is
    • (D – d)/2
    • (D + d)/2
    • (d – D)/2
    • None of these

  80. Which of the following factors effect the cutting speed?
    • Cutting tool material
    • Types of coolant
    • Kind of material being cut
    • All of these

  81. The highest peak in the Eastern Ghats :
    • Anamudi
    • Mahendragiri
    • Doda Betta
    • Dhaulagiri

  82. Which is the largest coastal salt water lake in India?
    • Gobind Sagar
    • Loletak
    • Chilka
    • Wular Lake

  83. The largest inhabited riverine island in the world is :
    • Majuli
    • Umananda
    • Kampala
    • Marajo

  84. The only large river in the Indian Desert region :
    • Ravi
    • Beas
    • Jhelum
    • Luni

  85. The meeting place of the rivers Ganga and Yamuna :
    • Lucknow
    • Ahmedabad
    • Faridabad
    • Allahabad

  86. Which state is known as the ‘Jewel of India’?
    • Jammu and Kashmir
    • Manipur
    • Punjab
    • Orissa

  87. ‘Anushilam’ was an organization during British rule in India, based on :
    • Extremist ideas
    • Radical ideas
    • Revolutionary terrorism
    • Moderate principles

  88. The Chauri Chaura incident happened during the Non-cooperation Movement was held on :
    • 5 February, 1922
    • 28 January, 1922
    • 8 March, 1922
    • 8 February, 1922

  89. In the following tourist attractions, which place is not in Idukki District?
    • Blossom Park
    • Cheeyappara Water Falls
    • Pothamedu View Point
    • Padinjarathara Dam

  90. In the following rivers, which river falls in the Paravoor Lake :
    • Kallada
    • Karuvannoor
    • Ithikkara
    • Kaariyamkoda

  91. “Vedadikara Niroopanam” is a book written by :
    • Sree Narayana Guru
    • Chattambi Swamikal
    • Bodheswaram
    • A.R. Rajaraja Varma

  92. Nakalapuram is the birthplace of :
    • Thycand Ayya
    • Ayya Vaikundar
    • Brahmananda Sivayogi
    • Vagbhatananda

  93. Sahodaran Ayyappan launched ‘Mishrabhojanam’ programme at Cherai in the year :
    • 1915
    • 1916
    • 1917
    • 1918

  94. Who led the first organized strike of agricultural labourers in Travancore?
    • P. Krishna Pillai
    • Ayyankali
    • E.M.S. Namboothiripad
    • Poikayil Yohannan

  95. Kumaranasan National Institute of culture at Thonnakkal was founded in the year :
    • 1957
    • 1962
    • 1965
    • 1958

  96. Who is the author of the book ‘Pakishtan : Beyond the Crisis States’?
    • Amir Mir
    • M.J. Akbar
    • Khurram Iqbal
    • Anupam Kher
    Question Error

  97. The winner of the Australian Open 2018, Men’s Singles :
    • Rafael Nadal
    • Roger Federer
    • Marin Cilic
    • Oliver Marach

  98. Who won the Ezhuthachan Award 2017?
    • K. Satchidanandan
    • Vaisakhan
    • C. Radhakrishnan
    • Prabha Varma

  99. The Malayalam novel, “Daivathinte Pusthakam” is written by :
    • T.D. Ramakrishnan
    • C. Radhakrishnan
    • K.P. Raman Unni
    • Perumbadavan Sreedharan

  100. Malayalam actor Indrans won the Best Actor Award for the film :
    • Ottamuri Velicham
    • Kinar
    • Bhayanakam
    • Aalorukkam

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