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.
Explanation: there is no point of mentioning collar alone in a cotter joint. it has to be a spigot collar or socket collar.
Explanation: the compression of connected parts in hot riveting causes friction, which resist sliding of one part with respect to other. this force is greater in hot riveting.
Explanation: compressive stress= p/ [(socket dia-spigot dia)*thickness].
Explanation: cotter joint is never used to connect two rods for torque transmission purpose.
Explanation: in riveting, cross section is weakened due to the holes and to compensate this, thicker plates are required in riveting.
Explanation: capacity of welded joints to damp vibrations is poor.
Explanation: thermite is a mixture of iron oxide and copper.
Explanation: wherever it is uneconomical to carry welding equipments, thermit welding is used.
Explanation: intense heat is released i a controlled way and at a moderate temperature.
Explanation: no filler material is used. only the heat released from resistance of metallic parts to current is used for melting the adjoining parts.
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