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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