Production Engineering Set 7

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This set of Production Engineering Multiple Choice Questions & Answers (MCQs) focuses on Production Engineering Set 7

Q1 | In gas welding the maximum flame temperature occurs at
  • Inside the inner cone
  • The inner cone
  • Next to the inner cone
  • The outer cone
  • The tip of the flame
Q2 | Silicon steel is used for
  • Ball bearings
  • Boiler plates
  • Industrial knives
  • Dies
  • Electrical stampings
Q3 | The efficiency of abrasive particles depends up
  • purity
  • uniformity in composition
  • hardness
  • All of the above
  • Parting off
Q4 | The hardness of martensite in quenched plain carbon steels reaches almost a saturation value of carbon of about
  • 0.20%
  • 0.40%
  • 0.60%
  • 1.40%
  • None of the above
Q5 | In centreless grinding the work piece advances by
  • Force exerted by regulating wheel
  • Remains stationalry
  • Hydraulic force
  • Force exerted by grinding wheel
  • Push given by operator
Q6 | The power consumption in ultrasonic machining in kW/m2/min is of the order of
  • 200 kW/m3/min
  • 1000 kW/m3/min
  • 1 kW/m3/min
  • 10 kW/m3/min
  • 100 kW/m3/min
Q7 | Shell sands are coated with
  • molasses
  • urea formaldehyde
  • carbon disulphide
  • Parting off
  • silica grains
Q8 | A very soft whisper may have noise level of
  • About 100 db
  • About 140 db
  • About 30 db
  • About 40 db
  • About 10 db
Q9 | The width of slot eut by a hack-saw blade is
  • None of these
  • Less than the width of blade
  • Slightly more than the width of blade
  • Equal to the width of blade
  • 1830 rpm
Q10 | Swell is a defect in castings due to
  • Enlargement of the mould cavity by metal pressure causing partial or overall enlargement of the casting
  • Working on cooling
  • Moisture in moulding sand
  • Thin projection of casting due to gap between flasks
  • Mis-mathcing of mould at the parting line
Q11 | In EDM the material of the tool is
  • Carbide
  • Copper
  • Satellite
  • Diamond
  • High speed steel
Q12 | In a centre lathe gear box for changing spindle speeds the provision for speeds is made in
  • Arithmetical progression
  • Geometrical progression
  • Cubical progression
  • Random members
  • Square progression
Q13 | In rubber bond for grinding wheels, sulphur is added to
  • Parting off
  • act as vulcanising agent
  • reduce shocks and vibrations
  • make the bond flexible
  • dissipate heat during grinding operation
Q14 | Profile of a gear tooth is to be checked. Which one of the following device would you choose?
  • Sine bear
  • Optical projector
  • Optical pyrometer
  • Bench micrometer
  • Telescopic gauge
Q15 | A chisel is used for
  • Cutting the wood
  • Planing the wood
  • Making holes in the wood
  • None of the above
  • Parting off
Q16 | Chips with built up edge are produced while machining
  • Non-ferrous materials
  • Cast materials
  • Hard materials
  • Brittle material
  • Ductile material
Q17 | Discontinuous or segmental chips are formed while machining
  • Mild steel
  • Brass
  • Carbon steel
  • Alloy steel
  • Cast iron
Q18 | Which of the following is a single point cutting tool?
  • Milling cutter
  • File
  • Grinding wheel
  • Parting tool
  • Hacksaw blade
Q19 | While using cemented carbide tipped tools on aluminium, the cutting speed could be
  • 100 - 300 m/min
  • 1000 m/min
  • 20 - 50 m/min
  • 300 - 900 m/min
  • 50 - 100 m/min
Q20 | A silver point is
  • The temperature of equilibrium between solid silver and liquid silver at normal atmospheric pressure
  • The pointed location spot silver plated
  • The temperature of equilibrium between liquid silver and silver vapour at normal atmospheric pressure
  • The point on a instrument dial reading beyond which may be dangerous for the system
  • The temperature at which silver melts
Q21 | In order to avoid unscrewing while on a bicycle the shaft or the right padel is screwed in with
  • Right hand thread
  • Left hand thread
  • Hysteresis
Q22 | The Roman notation DCCCC represents
  • 900
  • 440
  • 340
  • 90
  • 140
Q23 | During arc welding eyes need to be protected against
  • Microwaves
  • Infrared and ultraviolet rays
  • Intense glare
  • X-rays and gamma rays
  • High frequency waves
Q24 | In EDM the number of discharges perminute may be as high as
  • 3000
  • 6000
  • 6,000,000
  • 60,000
  • 600,000
Q25 | Undercutting is
  • An operation of cutting deep grooves
  • None of above
  • An operation of cutting a groove next to a shoulder on a piece of work
  • An operation of cutting extra wide threads
  • Cutting from the base of a work piece