Machine Design Set 15

Mechanical Engineering

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This set of Machine Design Multiple Choice Questions & Answers (MCQs) focuses on Machine Design Set 15

Q1 | For a parallel load on a fillet weld of equal leg the plane of maximum shear occurs
Q2 | Which of the following types of gears are free from interference?
Q3 | A section is subjected to reversal of stresses. Choice exists for selecting any of the following section. Which one should be selected?
Q4 | For the plastic analysis, the criterion for the analysis of a structure is based upon
Q5 | Two plates are joined by a parallel fillet welds. The plates are subjected to a tensile load of 35000 kg. If the allowable shear stress for the weld material be 800 kg the minimum length of 15 mm weld required to resist this load would be
Q6 | A spherical metal vessel 120 cm diameter is subjected to an internal pressure of 15 kg/sq cm. If the permissible stress is 625 kg/sq cm and the efficiency of the riveted joints is 75%, the required thickness of the plate would be
Q7 | Belt slip may occur due to
Q8 | The plastic hinge in a section is caused when
Q9 | The thickness of a gear tooth is measured
Q10 | The life of a ball bearing is usually given in
Q11 | In bolts the stress in the unthreaded area (the shank) is
Q12 | Life of a rolling bearing as listed in a catalogue is usually
Q13 | For the same power transmission, V-belts are
Q14 | Which of the following alloying metal for steels acts as a deoxidizing and desulphurising agent?
Q15 | The coefficient of friction in a rolling bearing is of the order of
Q16 | According to Indian Boiler Regulations the essential requirement of any safety valve is that
Q17 | Which of the following material is not suitable for impact loads?
Q18 | The fatigue limit of a material
Q19 | The material of a flt spiral spring is in a state of
Q20 | Safety valve used on locomotive boilers is generally of
Q21 | The limit design of steel structures makes use of
Q22 | Gas lubricated bearings are used for
Q23 | In a ball bearing a ball is subjected to
Q24 | Backlash is
Q25 | A cantilever beam of square section is subjected to a load W at the free end. If the length of the beam is increased and load reduced to half the deflection at the free end as compared to original deflection would be
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