Production Engineering Set 18

Mechanical Engineering

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This set of Production Engineering Multiple Choice Questions & Answers (MCQs) focuses on Production Engineering Set 18

Q1 | All of the following are metal cleaning methods EXCEPT
  • Parting off
  • Phosphatizing
  • Knurling
  • Abrasion blasting
  • Tumbling
Answer: Knurling
Q2 | Which one of the following is a natural abrasive?
  • Alundum
  • Corundum
  • Boron carbide
  • Carborundum
  • None of the above
Answer: Corundum
Q3 | In automatic control systems what could be the source of process disturbances?
  • Changes in supply
  • Changes in demand
  • Changes in environmental and other associated variables
  • Change in set point
  • Any of the above
Answer: Any of the above
Q4 | The maximum peripheral speed of a grinding wheel is limited by
  • The work material
  • The diameter of the wheel
  • The frive limitations
  • The size of the work piece
  • The kind of bond used in the wheel
Answer: The kind of bond used in the wheel
Q5 | Continuous chips
  • Are easily disposable
  • Sintering
  • Cause good surface finish
  • Waste power due to heat generation
  • Do not require cooling
Answer: Waste power due to heat generation
Q6 | Fetling of castings is done to
  • Fill the void by welding
  • Smoothen surfaces
  • Remove the extra material from castings
  • To remove internal stresses from castings
  • To produce uniformly cooled castings.
Answer: Remove the extra material from castings
Q7 | Lathe bed is made of
  • Mild steel
  • Close grain cast iron
  • Cast steel
  • Pig iron
  • Alloy steel
Answer: Close grain cast iron
Q8 | In a shrink rule the graduations are
  • Slightly longer than the regular graduations
  • Same as regular graduations
  • Slightly shorter than the regular graduations
  • None of the above
Answer: Slightly longer than the regular graduations
Q9 | The purpose of using a core in moulding is
  • To produce sound casting
  • To permit uniform flow of metal during moulding
  • To enable easy removal of pattern
  • To produce chilled surface
  • To provide desired recesses in casting
Answer: To provide desired recesses in casting
Q10 | A micron is
  • 0.01 mm
  • 0.1 mm
  • 1 mm
  • 0.0001 mm
  • 0.001 mm
Answer: 0.001 mm
Q11 | Investment casting uses pattern made of
  • Clay
  • Wood
  • Metal
  • Plastic
  • Wax
Answer: Wax
Q12 | Metal patterns are used for
  • Large castings
  • Large scale production of castings
  • Complicated castings
  • Precision castings
  • Small castings
Answer: Large scale production of castings
Q13 | In a lathe power feed is generally not available for
  • Lead screw
  • Carriage
  • Cross slide
  • Compound slide
  • All of the above
Answer: Compound slide
Q14 | Bellows are
  • Used in foundry for cleaning the casting
  • Used in foundry for blowing loose sand from cavities and surface of the mould
  • Used in foundry for smoothening and cleaning out depression in the mould
  • Used in foundry for repairing the moulds
  • Used in foundry for moistening the mould
Answer: Used in foundry for blowing loose sand from cavities and surface of the mould
Q15 | Which one of the following methods cannot be used for turning internal tapers?
  • Tail stock offset
  • Cross slide
  • Compound slide
  • All of the above
  • None of the above
Answer: Tail stock offset
Q16 | Which of the following is not a chipless machining process?
  • Rolling
  • Grinding
  • Extruding
  • Die casting
  • Cold heading
Answer: Grinding
Q17 | During planning the chips produced are in the form of
  • closed spirals
  • long helics
  • Parting off
  • spinters
  • fragments
Answer: fragments
Q18 | Choose the incorrect statements. A coolant should be
  • Good lubricant
  • Generally not provided
  • Harmless to operator and machine
  • Transparent
  • Light in weight
Answer: Light in weight
Q19 | Which of the following centre is used for holding hollow jobs on a lathe?
  • Oil groove centre
  • Revolving centre
  • Half centre
  • Square centre
  • Pipe centre
Answer: Pipe centre
Q20 | Which of the following process needs high current for its operation?
  • Electro chemical machining
  • Ultrasonic machining
  • Abrasive machining
  • Electron beam machining
  • Electric discharge machining
Answer: Electro chemical machining
Q21 | For short-distance transmission, the methods of transmission that can be used is
  • Hydraulic
  • Pneumatic
  • Electric and electronic
  • Any of the above
  • None of the above
Answer: Any of the above
Q22 | In a cupola
  • Wind box and tap hole are at the same level
  • Slag spout is below tape hole
  • Slag spout is above wind box
  • Tape hole is below wind box
  • Tape hole is above wind box
Answer: Tape hole is below wind box
Q23 | How wire anemometers are generally used to
  • Measure thermal conductivity of solids
  • Measure pressure of fluids
  • Measure temperature of moving fluid
  • Measure velocity of air steam
  • Measure magnetic properties
Answer: Measure velocity of air steam
Q24 | In EDM, the erosion of metal occurs due to
  • Eddy current generated on the metal surface
  • Highly ionised electrolyte impinging on the metal surface
  • Chemical erosion
  • Rapidly recurring spark discharges impinging against the surface of work piece
  • Molecular transfer
Answer: Rapidly recurring spark discharges impinging against the surface of work piece
Q25 | The tool used for punching small indentations/establishing points for divider is termed as
  • Solid punch
  • Parting off
  • Hollow punch
  • Prick punch
Answer: Prick punch
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