Q. If a material fails below its yield point, failure would be due to
✅ Correct Answer: (B)
fatigue
Machine Design MCQs | Page - 5
Dear candidates you will find MCQ questions of Machine Design 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. If a spring is cut down into two springs, the stiffness of cut springs will be
✅ Correct Answer: (C)
double
Q. If an application calls for stresses on screw threads in one direction only, then the following type of thread would be best suited
✅ Correct Answer: (C)
buttress
Q. If an unsupported uniform cross sectional elastic bar is subjected to a longitudinal impact from a rigid bob moving with velocity v, then a compressive wave of intensity sc is propagated through the bar as follows
✅ Correct Answer: (A)
vpE
Q. If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation
✅ Correct Answer: (D)
168 d
Q. If shearing stress in nut is half the tensile stress in a bolt, then nut length should be equal to
✅ Correct Answer: (A)
diameter of bolt
Q. If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to
✅ Correct Answer: (B)
0.25
Q. If threads on a bolt are left hand, threads on nut will be
✅ Correct Answer: (B)
left hand with same pitch
Q. If two springs are in parallel then their overall stiffness will be
✅ Correct Answer: (C)
double
Q. In a horizontal flat belt drive for power transmission it is customary to use
✅ Correct Answer: (B)
top side of the belt as slack side
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