Q. Which type of welding is generally used in automobile sector?
✅ Correct Answer: (B)
electric resistance welding
Explanation: electric resistance welding can
Design of Machine Elements MCQs | Page - 5
Dear candidates you will find MCQ questions of Design of Machine Elements here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. Hard peening is
✅ Correct Answer: (B)
hammering the weld along the length while the joint is hot
Explanation: hammering is doe to relieve stresses and inducing compressive stresses to improve the fatigue strength of the joint.
Q. A rivet is specified as a 20mm rivet. What does it mean?
✅ Correct Answer: (B)
shank dia 20mm
Explanation: terminology is this way.
Q. In hand riveting die is a part of hammer.
✅ Correct Answer: (B)
false
Explanation: die is a part of hammer in machine riveting.
Q. The amount by which the two rods to be joined are drawn together is called as?
✅ Correct Answer: (A)
draw
Explanation: draw measures the amount of distance advancing after which spigot rests on socket.
Q. 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)
✅ Correct Answer: (A)
31mm
Explanation: d=√(4p/πσ) where σ= yielding stress/f.s ; d=30.90mm or 31 mm.
Q. Among punching and drilling, which is cheaper?
✅ Correct Answer: (A)
punching
Explanation: drilling has more accuracy and is more expensive.
Q. Riveting is not recommended for aluminium alloys.
✅ Correct Answer: (B)
false
Explanation: aluminium alloys have poor weldability and hence riveting is preferred.
Q. In joining steel plate and asbestos, welding is preferred over riveting.
✅ Correct Answer: (B)
false
Explanation: riveting is preferred in joining heterogeneous materials.
Q. Quality checking of riveted joint is much expensive than that of welded joint.
✅ Correct Answer: (B)
false
Explanation: in welding, inspections like radiographic inspections are quite costly.
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