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This set of Production Engineering Multiple Choice Questions & Answers (MCQs) focuses on Production Engineering Set 4
Q1 | The power consumption in laser beam machining is of the order of
- 2 kW/m3/min
- 270 kW/m3/min
- 2700 kW/m3/min
- 5000 kW/m3/min
- 27 kW/m3/min
Q2 | A foil is
- Same as sheet
- Same as strip
- A cold rolled sheet
- A thin strip with maximum width 300 mm and a maximum thickness of 1.5 mm
- None of the above
Q3 | Vertical centrifugal castings as compared to horizontal centrifugal castings are spun at
- Lower speeds
- Higher speeds
- Same speed
- Varying speeds
- None of the above
Q4 | For a peripheral speed of 35 m/s, a grinding wheel of 800 mm diameter must rotate at
- 1600 rpm
- 835 rpm
- 435 rpm
- 60 rpm
- 85 rpm
Q5 | In a lathe gear box if first four consecutive speed are 19, 30, 47, 74 rpm, the next speed would be
- 116 rpm
- 104 rpm
- 111 rpm
- 93 rpm
- 101 rpm
Q6 | EDM is generally preferred for
- Hard materials
- Cast materials
- Non-metallic compounds
- Non-ferrous materials
- Polymers
Q7 | Grey iron is usually welded by
- Resistance welding
- Arc welding
- TIG welding
- Gas welding
- MIG welding
Q8 | The machine allowance on castings does depend on
- Size of the casting
- Shape of the casting
- Temperature of molten material
- All of the above
- None of the above
Q9 | A strip is
- A section other than rectangular
- A sheet less than 6 mm in thickness and 300 mm in width
- A cold rolled sheet
- Same as sheet
- Same as plate
Q10 | On a die accurate holes are to be drilled. Which machine would you prefer for this operation?
- Parting off
- Radial drilling machine
- Portable drilling machine
- Jig boring machine
- Multi-pindle drilling machine
Q11 | Which one of the following is used for thermocouple junctions?
- Muntz metal
- Elinvar
- Manganin
- Duralumin
- Nichrome
Q12 | The property due to which sand grains stick together is known as
- adhesiveness
- Parting off
- permeability
- cohesiveness
- plasticity
Q13 | In case of very hard surfaces the Brinell Hardness test method fails to give reliable results because
- Ball does not force into the metal
- Ball deforms on very hard surfaces
- Ball slips along the surface
- It is generally not desired to use this method in such cases
- None of the above
Q14 | Shot blasting is
- Process of cleaning moulding sand
- Process of cleaning spherical objects only
- Process of supplying blast of hot air to cupola
- Process of cleaning castings
- Process of cleaning core sand
Q15 | Which of the following source for laser beam can give the highest power density (W/mm2)?
- Laser continuous
- Plasma arc
- Laser pulsed
- All have the same power density
- Electron beam
Q16 | A flycutter is used on
- Planer
- Slotter
- Shaper
- Milling machine
- Lathe
Q17 | High rate of oscillation of tools in ultrasonic machining is produced by
- Pneumatic generator
- Explosives
- D.C. motor
- Oscillator
- A.C. motor
Q18 | Slip gauges are made of
- Aluminium
- Copper
- Alloy steel
- Stainless steel
- Cast iron
Q19 | A third flask sometimes used between cope and drag is called
- Core
- Middle
- Check
- Riddle
- Fillet
Q20 | Which of the following is a ferrous cutting tool?
- Diamond
- Cast carbides
- HSS
- Ceramics
- Parting off
Q21 | Gear cutter No. 1 for cutting gears on milling machine is used for
- 17 to 20 teeth
- 135 to 150 teeth
- 12 to 13 teeth
- Racks only
- 55 to 120 teeth
Q22 | DIN specifications have been developed in
- Austria
- Russia
- America
- Germany
- England
Q23 | A steady rest is used
- During taper turning
- During threading operation
- For supporting the bed
- While cutting heavy and log jobs
- During finishing operation
Q24 | During electron beam welding the vacuum is of the order of
- 10-5 torr
- 1 torr
- 10-3 torr
- 10-4 torr
- 10-2 torr
Q25 | Which one does not fit with rest in the following?
- Jaw chuck
- Drill
- Tapping
- Reamer
- Pipe cutter