Production Engineering Set 21

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This set of Production Engineering Multiple Choice Questions & Answers (MCQs) focuses on Production Engineering Set 21

Q1 | In most high speed milling cutters, positive radial rake angle is
  • 10 - 15?
  • Less than 50?
  • 15 - 25?
  • 25 - 35?
  • 5 - 10?
Q2 | A feeder gauge is used to check
  • Screw pitch
  • Surface roughness
  • Diameter of round objects
  • Unsymmetrical shape
  • Thickness of a clearance
Q3 | Surface finish of a casting is affected by
  • fineness of sand
  • pattern finish
  • mould dressings
  • All of the above
  • Parting off
Q4 | In which of the following welding process the two pieces to be joined are over-lapped and placed between two electrodes?
  • Projection welding
  • Spot welding
  • Seam welding
  • Butt welding
  • Percussion welding
Q5 | The range of temperature for soldering process is
  • 10?C to 50?C
  • 400?C to 650?C
  • 250?C to 400?C
  • 180?C to 250?C
  • 50?C to 100?C
Q6 | The equipment used in pit for supply of air is
  • Centrifugal blower
  • Fan
  • Hand blower
  • Reciprocating air compressor
  • Air cylinder
Q7 | Material used for surface plate in fitting shop is
  • Mild steel
  • Parting off
  • Cast iron
  • Cast steel
Q8 | During ultrasonic machining the metal removal is effected by
  • High frequency sound waves
  • High frequency eddy currents
  • Rubbing action between tool and work piece
  • Hammering action of abrasive particles
  • All of the above
Q9 | Solid punches are used for making holes having diameter equal to
  • Parting off
  • (2.5 - 10) mm
  • (4 - 6) mm
  • (1 - 3) mm
Q10 | During arc welding the welding speed is too low, it is likely to result in
  • Excessive pilling up of weld metal
  • Overlapping without penetration edges
  • Wastage of electrode material
  • All of the above
  • None of the above
Q11 | In arc welding as the thickness of the material to be welded increases, the welding current requirement
  • Decreases
  • 8 mm
  • Does not change
  • Increases
Q12 | Molasses in a foundry shop is used
  • For preventing rusting of castings
  • For use as a fuel in furnace
  • For making moulds
  • For core making
  • For cleaning castings
Q13 | Prescribed maximum reading distance for a 100 mm dial is generally
  • 1.5 - 2.0 m
  • 4 - 5 m
  • 2.5 - 3 m
  • 1 - 1.5 m
  • 1 m
Q14 | In plasma arc machining the achievable tolerances are nearly
  • 0.01
  • 1
  • 25
  • 250
  • 0.1
Q15 | Which of the following material is cut at the highest cutting speed?
  • Copper
  • Alloy steel
  • Brass
  • Cast iron
  • High carbon steel
Q16 | Weld spatter defect in welding is generally the result of
  • Using too high welding current
  • Using too low welding current
  • Low voltage
  • High voltage
  • None of the above
Q17 | A 30 ton press means
  • The weight of die is 30 tons
  • The quantity of work produced in 8 hours will be 30 tons
  • The flywheel of the press weighs 30 tons
  • Gross weight of the press is 30 tons
  • The pressure exerted by slide is 30 tons
Q18 | For drills having diameter upto 12.7 mm.
  • Parallel shank is provided
  • Tapered shank is provided
  • Shank may be either of (A) or (B)
  • Bell metal
Q19 | The machining allowance provided on patterns depends on
  • The material of the casting
  • Size and shape of casting
  • The material of the pattern
  • The composition of moulding sand
  • Temperature of molten material
Q20 | For the same capacity which of the following process has the lowest capital cost?
  • Abrasive jet machining
  • Chemical machining
  • Electron jet machining
  • Abrasive jet machining
  • Electro chemical machining
Q21 | For centreless grinding the surface speed is
  • 1200 to 1500 metres per minute
  • 600 to 900 metres per minute
  • 500 to 600 metres per minute
  • 1500 to 1800 metres per minute
  • Parting off
Q22 | The rating of solder iron normally used for electronics work is
  • 1 kW to 2 kW
  • 750 to 1000 watts
  • 500 to 750 watts
  • 250 to 500 watts
  • 50 to 100 watts
Q23 | The process of bringing out the lustre of metal usually by the use of cloth wheels is known as
  • Finishing
  • Buffing
  • Deburring
  • Burnishing
  • Carmetting
Q24 | During soldering
  • Borax is used a flux
  • Solder iron bit is red hot
  • Metal is heated from top as well as bottom
  • Arc is produced between solder iron and metal to be soldered
  • Joint area must be clean and close fitting
Q25 | An optical gauge works on the principle of
  • Dispersion of light rays
  • Polarisation of light rays
  • Interference of light rays
  • Reflection of light rays
  • Refraction of light rays