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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