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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