Design Of Machine Elements Set 10

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This set of Design of Machine Elements Multiple Choice Questions & Answers (MCQs) focuses on Design Of Machine Elements Set 10

Q1 | Which of the following is not a part of cotter joint?
  • socket
  • spigot
  • cotter
  • collar
Q2 | Cold riveting holds the connected parts better than hot riveting.
  • true
  • false
Q3 | 67 N/mm².; Spigot dia=65mm; thickness 0f collar=15mm
  • 131mm
  • 139mm
  • 141mm
  • 149mm
Q4 | Cotter joint can be used to connect two rods for torque transmission purpose.
  • true
  • false
Q5 | Thickness of plate is required more in welding than in riveting.
  • true
  • false
Q6 | The capacity of welded structures to damp vibrations is quite good.
  • true
  • false
Q7 | Themit consists of a finely divided mixture of iron oxide and copper.
  • true
  • false
Q8 | Rails in the field are generally welded by using
  • thermit welding
  • gas welding
  • electric arc welding
  • forge welding
Q9 | In gas welding which of the following is generally used?
  • oxygen-hydrogen
  • oxygen-acetylene
  • oxygen-hydrogen or oxygen-acetylene
  • none of the mentioned
Q10 | Among gas and electric arc welding, which has the higher rate of heating?
  • gas welding
  • electric arc welding
  • gas welding and electric arc welding have equal rate of heating
  • cannot be determined
Q11 | Forge welding involves heating of parts to elastic stage and joint is prepared by impact force.
  • yes
  • no, it is done up to plastic stage
  • heating is done up to boiling point
  • none of the listed
Q12 | Filler material is used in electric resistance welding.
  • yes
  • no filler material used
  • depends on the type of welding
  • none of the listed
Q13 | Which type of welding is generally used in automobile sector?
  • electric arc welding
  • electric resistance welding
  • gas welding
  • forge welding
Q14 | Hard peening is
  • hammering the weld across the length while the joint is hot
  • hammering the weld along the length while the joint is hot
  • hammering the weld along the length while the joint is cold
  • hammering the weld across the length while the joint is cold
Q15 | Which of the following isn’t a main part of rivet?
  • head
  • shank
  • point
  • thread
Q16 | A rivet is specified as a 20mm rivet. What does it mean?
  • none of the mentioned
  • shank dia 20mm
  • head dia 20mm
  • both head and shank dia 20mm
Q17 | In hand riveting die is a part of hammer.
  • true
  • false
  • topic 3.5 riveted joints for structures
Q18 | In hot riveting the shank portion is subjected to compressive stress.
  • true
  • false
Q19 | The amount by which the two rods to be joined are drawn together is called as?
  • draw
  • portray
  • lead
  • pitch
Q20 | Two steel rods connected by cotter joint are subjected to 50 kN load each. What is the minimum diameter required of the rods? (Given: Yielding Stress= 400N/mm² ; Factor of Safety=6)
  • 31mm
  • 35mm
  • 36mm
  • 40mm
Q21 | Among punching and drilling, which is cheaper?
  • punching
  • drilling
  • equally expensive
  • cannot be determined
Q22 | Among punching and drilling, punching is safer.
  • true
  • false
Q23 | Riveting is not recommended for aluminium alloys.
  • true
  • false
Q24 | In joining steel plate and asbestos, welding is preferred over riveting.
  • true
  • false
Q25 | Quality checking of riveted joint is much expensive than that of welded joint.
  • true
  • false