Machine Design Multiple Choice Questions on “Riveted Joints Basics”.
1. Which of the following isn’t a main part of rivet?
a) Head
b) Shank
c) Point
d) Thread
Answer: d
Clarification: There aren’t any threads in rivets.
2. A rivet is specified as a 20mm rivet. What does it mean?
a) None of the mentioned
b) Shank dia 20mm
c) Head dia 20mm
d) Both head and shank dia 20mm
Answer: b
Clarification: Terminology is this way.
3. In hand riveting die is a part of hammer.
a) True
b) False
Answer: b
Clarification: Die is a part of hammer in machine riveting.
4. In hot riveting the shank portion is subjected to compressive stress.
a) True
b) False
Answer: b
Clarification: It is subjected to tensile stress as the head rests against the connected members to prevent reduction in length.
5. The amount by which the two rods to be joined are drawn together is called as?
a) Draw
b) Portray
c) Lead
d) Pitch
Answer: a
Clarification: Draw measures the amount of distance advancing after which spigot rests on socket.
6. 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)
a) 31mm
b) 35mm
c) 36mm
d) 40mm
Answer: a
Clarification: d=√(4P/πσ) where σ= Yielding Stress/F.S ; d=30.90mm or 31 mm.
7. Among punching and drilling, which is cheaper?
a) Punching
b) Drilling
c) Equally expensive
d) Cannot be determined
Answer: a
Clarification: Drilling has more accuracy and is more expensive.
8. Among punching and drilling, punching is safer.
a) True
b) False
Answer: b
Clarification: Punching injures the metal in the vicinity of the hole.
9. Riveting is not recommended for aluminium alloys.
a) True
b) False
Answer: b
Clarification: Aluminium alloys have poor weldability and hence riveting is preferred.
10. In joining steel plate and asbestos, welding is preferred over riveting.
a) True
b) False
Answer: b
Clarification: Riveting is preferred in joining heterogeneous materials.
11. Quality checking of riveted joint is much expensive than that of welded joint.
a) True
b) False
Answer: b
Clarification: In welding, inspections like radiographic inspections are quite costly.