Draftsman Gr.II - Factories and Boilers 220/2016 Answer Key 68/17

Mechanical gears

Post : Draftsman Gr.II
Department : Factories and Boilers
Category Code : 220/2016
Qualification : Diploma in Mechanical Engineering
Question Paper Code : 68/17
Date of Test : 14-06-2017


  1. The term modular ratio of the two materials is ratio of __________.
    • linear stress to lateral stress
    • their modulus of rigidities
    • their modulus of elasticities
    • shear stress to shear strain

  2. A bolt is made to pass through a tube, both ends of them are tightly fitted with the help of washer and nuts. If the nut is tightened :
    • Bolt is under tension and tube is under compression
    • Bolt is under compression and tube is under tension
    • Bolt and tube are under tension
    • Bolt and tube are under compression

  3. When a force is acting on a body through axially, the strain developed in the perpendicular direction of the force is known as :
    • Linear strain
    • Lateral strain
    • Shear strain
    • Volumetric strain

  4. A cantilever beam is loaded with point load at free end, the bending moment at the free end is :
    • Zero
    • Maximum
    • Minimum
    • Unity

  5. The shape of bending moment diagram for a simply supported beam loaded in its center is :
    • A rectangle
    • An equilateral triangle
    • A right angled triangle
    • An isosceles triangle

  6. The purpose of springs in brakes and clutches are :
    • To absorb shocks
    • To store strain energy
    • To measure force
    • To apply force
    Question error

  7. The object of caulking in a riveted joint is to make the joint :
    • Free from stresses
    • Free from corrosion
    • Leak proof
    • To prevent crack

  8. A column that fails due to direct stress only is called :
    • Short column
    • Long column
    • Weak column
    • Medium column

  9. Lame’s theory is associated with :
    • Thin cylindrical shells
    • Thick cylindrical shells
    • Direct and bending stresses
    • Torsion of shafts

  10. The value of compressive strength of a brittle material is ___________ its tensile strength.
    • equal to
    • greater than
    • less than
    • reciprocal of

  11. The variation in the volume of a liquid with variation of pressure is called its :
    • Surface tension
    • Compressibility
    • Capillarity
    • Viscosity

  12. A Pitot tube is used to measure the :
    • velocity of flow at the required point in a pipe
    • pressure difference between two points in a pipe
    • total pressure of liquid flowing in a pipe
    • discharge through a pipe

  13. Coefficient of contraction is the ratio of :
    • Actual velocity of jet at vena contracta to theoretical velocity
    • Loss of head in the orifice to the head of water available at the exit of the orifice
    • Actual discharge through an orifice to the theoretical discharge
    • Area of jet at vena cotracta to the area of orifice

  14. An orifice is said to be large if :
    • The size of orifice is large
    • The velocity of flow is large
    • The available head of liquid is more than five times the diameter of orifice
    • The available head of liquid is less than five times the diameter of orifice

  15. An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening is called :
    • Weir
    • Notch
    • Orifice
    • Pipe flow

  16. Reynolds number is the ratio of the inertia force to the :
    • Surface tension force
    • Viscous force
    • Gravity force
    • Elastic force

  17. Which of the following pumps is suitable for small discharge and high heads?
    • Centrifugal pump
    • Axial flow pump
    • Mixed flow pump
    • Reciprocating pump

  18. Which of the following hydraulic units works on the principle of Pascal’s law?
    • Air lift pump
    • Jet pump
    • Hydraulic coupling
    • Hydraulic press

  19. A hydraulic ram is a device used to :
    • Store the energy of water
    • Increase the pressure of water
    • To lift small quantity of water to greater height
    • To lift water from deep well

  20. The amount of heat required to raise the temperature of __________ water through one degree is called KiloJoule.
    • 1 gram
    • 10 gram
    • 100 gram
    • 1000 gram

  21. The sum of internal energy and the product of pressure and volume is known as :
    • Work done
    • Entropy
    • Enthalpy
    • External energy

  22. The heat energy stored in the gas and used for raising the temperature of the gas is known as :
    • Heat energy
    • Internal energy
    • Kinetic energy
    • Molecular energy

  23. The hyperbolic process is governed by :
    • Boyle’s Law
    • Charles’ Law
    • Gay-Lussac’s Law
    • Avogadro’s Law

  24. The compression ratio is the ratio of :
    • Swept volume to Total volume
    • Total volume to Swept volume
    • Swept volume to Clearance volume
    • Total volume to Clearance volume

  25. The compression ratio for petrol engine is :
    • 3 to 6
    • 5 to 8
    • 15 to 20
    • 20 to 30

  26. A thermodynamic cycle consisting of, one constant pressure, one constant volume and two isentropic process is known as :
    • Carnot Cycle
    • Sterling Cycle
    • Otto Cycle
    • Diesel Cycle

  27. The calorific volume of gaseous fuel is expressed in :
    • kJ
    • kJ/kg
    • kJ/m3
    • kJ/m2
    Question error

  28. The thermodynamic property like temperature is measured on basis of :
    • Zeroth law of thermodynamics
    • First law of thermodynamic
    • Second law of thermodynamics
    • Third law of thermodynamics

  29. Which of the following is a water tube boiler?
    • Lancashire boiler
    • Babcock and Wilcox boiler
    • Locomotive boiler
    • Cochran boiler

  30. An economizer is installed in a boiler primarily to :
    • Superheat the steam
    • Reduce the fuel consumption
    • Increase the steam pressure
    • Indicate steam level

  31. The actual power generated in the engine cylinder is called :
    • Brake power
    • Indicated power
    • Frictional power
    • Thermal power

  32. The energy conversion takes place in steam nozzle is :
    • Heat energy of steam into Kinetic energy
    • Kinetic energy of steam into Heat energy
    • Heat energy of steam into Potential energy
    • Potential energy of steam into Heat energy

  33. The thermodynamic cycle on which the petrol engine works :
    • Joule Cycle
    • Rankine Cycle
    • Otto Cycle
    • Sterling Cycle

  34. The air-fuel ratio of the petrol engine is controlled by :
    • Injector
    • Governor
    • Spark plug
    • Carburettor

  35. The unit of thermal diffusivity is :
    • m/hK
    • m/h
    • m2/h
    • m2/hK

  36. The automobile radiator is a heat exchanger of :
    • Parallel flow type
    • Counter flow type
    • Crossflow type
    • Regenerator type

  37. Bell-Coleman cycle is a :
    • Reversed Joule cycle
    • Reversed Otto cycle
    • Reversed Rankine cycle
    • Reversed Carnot cycle

  38. The lead screw of a lathe with nut form a __________ pair.
    • Rolling pair
    • Sliding pair
    • Screw pair
    • Turning pair

  39. V-belts are usually used for :
    • Long drives
    • Short drives
    • Long and short drives
    • Sprocket drives

  40. The ratio of the number of teeth to pitch circle diameter in millimeter is called :
    • Circular pitch
    • Module
    • Diametrical pitch
    • Addendum

  41. Which of the following is the function of a washer?
    • Fill up the axial gap
    • Provide cushioning effect
    • Provide bearing area
    • Absorb shocks and vibrations

  42. A bolt is designed on the basis of __________ with a large factor of safety.
    • Direct tensile stress
    • Direct compressive stress
    • Direct bending stress
    • Direct shear stress

  43. The size of a gear is usually specified by :
    • Pressure angle
    • Diametrical pitch
    • Circular pitch
    • Pitch circle diameter

  44. The fuel used in a blast furnace is :
    • Coal
    • Coke
    • Wood
    • Producer gas

  45. The machinability of steel is improved by adding :
    • Nickel
    • Chromium
    • Nickel and Chromium
    • Sulphur, Lead and Phosphorus

  46. Age hardening is related to :
    • Duralumin
    • Brass
    • Copper
    • Silver

  47. Monel metal is an alloy of :
    • Nickel and Chromium
    • Copper and Chromium
    • Nickel and Copper
    • Nickel, Chromium and Iron

  48. A mortise gauge is a :
    • Striking tool
    • Plaining tool
    • Boring tool
    • Marking tool

  49. Riddle is used for :
    • Smoothing and cleaning out depression in the mould
    • Cleaning the moulding sand
    • Moistening the sand around the edge before removing pattern
    • Reinforcement of sand in the top part of moulding box

  50. The fullers are used :
    • For finishing flat surfaces
    • For necking down a piece of work
    • For punching a hole
    • To finish the punched hole

  51. The operation of cutting a sheet of metal in a straight line along a length is known as :
    • Plunging
    • Notching
    • Slitting
    • Forming

  52. Acetylene gas is stored in the cylinder in :
    • Solid form
    • Gaseous form
    • Liquid form
    • Jelly form

  53. A neutral flame is obtained by supplying :
    • Equal volume of oxygen and acetylene
    • More volume of oxygen and less volume of acetylene
    • More volume of acetylene and less volume of oxygen
    • Equal volume of oxygen and hydrogen

  54. Galvanizing is the process of :
    • Zinc diffusion process
    • Making thin phosphate coating on steel
    • Making thin copper coating on steel
    • Making thin zinc coating by hot dipping

  55. The cross-section of a chisel is usually :
    • Rectangular
    • Square
    • Hexagonal
    • Octagonal

  56. A hacksaw blade is specified by its :
    • Length
    • Material
    • Width
    • Number of teeth
    Question error

  57. The type of file used for a wood work is :
    • Single cut file
    • Double cut file
    • Rasp cut file
    • Smooth cut file

  58. The instrument which has all the features of try-square, bevel protractor, ruler and scriber is :
    • Outside micrometer
    • Combination set
    • Inside micrometer
    • Depth gauge micrometer

  59. A ring gauge is used to :
    • Check the diameter of shaft or studs
    • Test the accuracy of holes
    • Check the clearance between two mating surfaces
    • Check thickness of sheet

  60. The temperature at which the new grains are formed in the metal is called :
    • Lower critical temperature
    • Upper critical temperature
    • Eutectic temperature
    • Re-crystallization temperature

  61. Discontinuous chips are formed during machining of :
    • Brittle metals
    • Ductile metals
    • Hard metals
    • Soft metals

  62. In a centre lathe, the cutting tool is fed in __________ with reference to the lathe axis.
    • Cross direction only
    • Longitudinal direction only
    • Both cross and longitudinal direction
    • Any direction

  63. The chamfering is an operation of :
    • Embossing a diamond shaped pattern on the surface of the work piece
    • Enlarging the diameter of a hole cylindrically
    • Reducing the diameter of a work piece
    • Beveling the extreme end of a work piece

  64. In drilling operation, the metal is removed by :
    • Shearing
    • Extrusion
    • Shearing and extrusion
    • Shearing and compression

  65. The grinding operation is a :
    • Shaping operation
    • Surface finishing operation
    • Forming operation
    • Dressing operation

  66. A process of removing metal by pushing or pulling a cutting tool is called :
    • Up milling
    • Down milling
    • Forming
    • Broaching

  67. In ultrasonic machining, the metal is removed by :
    • Using abrasive slurry between the tool and work
    • Direct contact of tool with the work
    • By using an electrolyte between work and tool
    • Spark erosion between the tool and work

  68. Chemical milling operation is performed :
    • On universal milling machine
    • In a tank containing an etching solution
    • On plain milling machine
    • On broaching machine

  69. PERT stands for :
    • Programme Estimation and Reporting Technique
    • Programme Estimation and Review Technique
    • Programme Evaluation and Review Technique
    • Planning Estimation and Resulting Technique

  70. Work study is mainly aimed at :
    • Determining the most efficient method of performing a job
    • Establishing the minimum time of completion of a job
    • Developing the standard method and standard time of a job
    • Economizing the motions involved on the part of the workers while doing a job
    Question error

  71. Which of the following wage incentive plan is applied to all workers?
    • Gantt plan
    • Halsey plan
    • Emerson’s plan
    • Rowan plan

  72. Production cost refers to sum of Factory cost and ___________.
    • Administrative overheads
    • Selling cost
    • Distribution overheads
    • Direct material cost

  73. Military organization is known as :
    • Line organization
    • Functional organization
    • Line and Staff organization
    • Line Staff and Functional organization

  74. Gantt chart is used for :
    • Inventory control
    • Material handling
    • Production schedule
    • Machine repair schedule

  75. In value engineering, imported consideration is given to :
    • Cost reduction
    • Function concept
    • Profit maximization
    • Customer satisfaction

  76. Simplex method is the method used for :
    • Value engineering
    • Network analysis
    • Linear programming
    • Queuing theory

  77. The combustion process in diesel engine is a :
    • Constant volume process
    • Constant pressure process
    • Constant temperature process
    • Adiabatic process

  78. The aluminum alloy is used in cylinder blocks because :
    • It is lighter and have good heat dissipation characteristics
    • Material cost is low
    • It does not require any cylinder lining
    • The piston is also made of aluminum alloy

  79. The connecting rod is attached to the piston by the :
    • Cap bolt
    • Cap roller bearing
    • Piston pin
    • Rod cap

  80. In a diesel engine, the function of a fuel injector is to :
    • Mix the fuel and air
    • Ignite the air fuel mixture
    • Provide flame for ignition
    • Spray atomized fuel in the cylinder

  81. Who expressed the view that the Constitution of India “is workable, it is flexible, and it is strong enough to hold the country together both in peace time and in war time”?
    • Dr.B.R. Ambedkar
    • Jawaharlal Nehru
    • K.M. Munshi
    • B.N. Basu

  82. Who among the following was not a member of The States Reorganization Commission set up in 1953?
    • Fazal Ali
    • K.M. Panikkar
    • H.N. Kunzru
    • Pattabhi Sitaramayya

  83. The Lok Sabha passed The Rights of Persons with Disabilities Bill-2016 on :
    • 16 January, 2017
    • 16 December, 2016
    • 20 December, 2016
    • 20 January, 2017

  84. The 44th Chief Justice of India is :
    • T.S. Thakur
    • H.L. Dattu
    • J.S. Khehar
    • R.M. Lodha

  85. The Sadhu Jana Paripalana Yogam was founded in :
    • 1901
    • 1905
    • 1927
    • 1907

  86. The first All Kerala Political Conference was held in 1921 at :
    • Ottappalam
    • Tirur
    • Kozhikode
    • Manjeri

  87. Sahodara Sangham was founded in 1917 by :
    • K. Kelappan
    • K. Ayyappan
    • Ayyankali
    • C.V. Kunhiraman

  88. The editor of the newspaper Mitavadi was :
    • T.K. Madhavan
    • A.K. Gopalan
    • C. Krishnan
    • P. Krishna Pillai

  89. In which case the Supreme Court of India opined that the Preamble of the Indian Constitution is not a part of the Constitution?
    • LIC of India Case
    • Berubari Union Case
    • Kesavananda Bharati Case
    • Nanavati Case

  90. Who was selected as the “Person of the Year 2016” by the Time Magazine?
    • Donald Trump
    • Narendra Modi
    • Vladimir Putin
    • Hillary Clinton

  91. Who described the ‘Preamble of the Indian Constitution’ as the ‘Key-note’?
    • Lord Mountbatten
    • Dr.B.R. Ambedkar
    • Jawaharlal Nehru
    • Ernest Barker

  92. Who criticized the ‘Objective Resolution’ moved by Jawaharlal Nehru in the Constituent Assembly as “wrong, illegal, premature, disastrous and dangerous”?
    • Hazrat Mohani
    • Muhammed Ali Jinnah
    • M.R. Jayakar
    • Dr.B.R. Ambedkar

  93. The present Speaker of the Bangladesh Parliament is :
    • Shamsul Huda Chowdhury
    • Shah Abdul Hamid
    • Dr. Shirin Sharmin Chaudhury
    • Humayun Rasheed Chowdhury

  94. The second Ezhava Memorial was submitted to :
    • Lord Curzon
    • Sri Mulam Tirunal Rama Varma
    • Rama Varma Visakam Tirunal
    • Lord Mountbatten

  95. The Secretary General of UNO is :
    • Ban Ki-moon
    • Antonio Guterres
    • Kofi Annan
    • Amina Mohammed

  96. The Supreme Court of India issued for the first time a contempt of court notice against the sitting judge, Justice C.S. Karnan who is presently serving in :
    • Delhi High Court
    • Madras High Court
    • Kerala High Court
    • Calcutta High Court
    Question error

  97. The organization called the Samyukta Rashtriya Samiti was formed in connection with :
    • Aikya Kerala Movement
    • Abstention Movement
    • Guruvayur Satyagraha
    • Vaikkom Satyagraha

  98. Samatava Samajam was established in :
    • 1836
    • 1846
    • 1826
    • 1850

  99. The present Director General of the World Trade Organization is :
    • Pascal Lamy
    • Harsha Singh
    • Roberto Azevedo
    • Karl Brauner

  100. The 20th Chief Election Commissioner of India is :
    • V.S. Sampath
    • H.S. Brahma
    • Om Prakash Rawat
    • Dr. Nasim Zaidi

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