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This set of Production Engineering Multiple Choice Questions & Answers (MCQs) focuses on Production Engineering Set 31
Q1 | Drills are usually made of
- Diamonds
- Carbon steel
- High speed steel
- Carbides
- High carbon steel
Q2 | In order to lower the cutting forces and also to decrease the cutting wear, alloying element generally added to steel for free machining is
- Lead
- Chromium
- Manganese
- Sulphur
- Aluminium
Q3 | Tumber gears are used on lathes to
- Reduce lead screw speeds
- Provide automatic motion to cross-slide
- Provide desired direction of motion to lathe carriage
- None of the above
- Ruby
Q4 | A triple threaded worm is in mesh with a worm wheel of 40 teeth. If the worm revolves at 1200 rpm, the of the worm wheel will be
- 10
- 90
- 30
- 40
- 270
Q5 | Gun metal is an alloy containing
- Copper, lead, tin
- Copper, nickel, silver
- Copper, zinc, silver
- Copper, tin, zinc
- Copper, tin, silver
Q6 | A drilling machine has spindle speeds from 70 to 800 rpm in eight steps. The fourth speed from the lowest will be
- 245 rpm
- 340 rpm
- 175 rpm
- 300 rpm
- 198 rpm
Q7 | A 20 mm diameter international metric thread will have a pitch of
- 1.25 mm
- 1 mm
- 2.5 mm
- 1.50 mm
- 2.0 mm
Q8 | The angular clearance provided on dies is usually
- 7? to 9?
- 5? to 7?
- 3? to 5?
- 10? to 15?
Q9 | Last element in the tool signature is
- nose radius
- side cutting edge angel
- side rake angle
- side relief angle
- Parting off
Q10 | In case of cast iron castings, the shrinkage allowance is
- 7-10 mm/M
- 0.1-0.01 mm/M
- 1-0.1 mm/M
- 50-75 mm/M
- 75-100 mm/M
Q11 | With increasing cutting velocity total time for machining a component
- decreases
- increases
- first decreases and then increases
- None of the above
- All of the above
Q12 | Which of the following is a multispot welding process?
- Projection welding
- Percussion welding
- Atomic hydrogen welding
- Thermit welding
- Seam welding
Q13 | Which of the following welding process uses consumable electrodes
- TIG welding
- MIG welding
- Thermit welding
- Gas welding
- Laser welding
Q14 | An important factor to be taken into account while designing a core print is
- Pouring temperature
- Buoyancy effect of molten material
- Type of mould
- Pattern material
- Moulding sand characteristics
Q15 | Hobbing process cannot be used to cut
- Spur gears
- Helical gears
- Worm gears
- Bevel gears
- All of the above
Q16 | Choose the incorrect statement
- Ductile materials in presence of fine feed and high cutting speed produce chips with built up edges
- Ductile material produce continuous chip
- Both (A) and (B)
- None of the above
- Any of the above
Q17 | The chips formed during the milling of aluminium are
- closed spirals
- Parting off
- helical
- snarl
- fragments
Q18 | A gear is to have 14 teeth. Which of the following indexing movement can be used?
- 2 complete turns and 18 holes in 21 hole circle
- Parting off
- 3 complete turns on a 42 hole circle
- 2 complete turns and 36 holes in 49 hole circle
- 2 complete turns and 6 holes in 18 hole circle
Q19 | The chips formed during broaching of steel are
- closed spirals
- fragments
- splinters
- Parting off
- snarl
Q20 | In a turret lathe a pre-selector is a device
- That is used to decide the operation to be done on a job prior to a specific operation
- Used for feeding bar to chuck
- None of above
- That is used to pre-select the spindle speed for the next operation in progress
- That is used to select in the job prior to loading
Q21 | A rotameter is used to measure
- Twist due to torque applied on shafts
- Magnetic flux variation
- Rotation of shafts
- rpm of engines
- Flow of liquids and gases