Test: Machine Design - 7 - Mechanical Engineering MCQ
25 Questions MCQ Test Design of Machine Elements - Test: Machine Design - 7
A pressure vessel is said to be a thick shell, if the ratio of wall thickness to its diameter is
The radial stress across the thickness of a thick cylinder is maximum at the inner surface and zero at the outer surface.
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The diameter of the rivet hole is usually __________ the nominal diameter of the rivet.
The effective stress in wire ropes during normal working is equal to the stress due to
When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a
According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width (5 rivets per pitch length) should be
When two non-parallel or intersecting but coplaner shafts are connected by gears, the arrangement is known as bevel gearing.
According to Indian standards, a bolt thread of 6 mm size of coarse pitch and with allowance on the threads and normal tolerance grade is designated as
According to maximum normal stress theory, the maximum normal stress in the shaft is
When a beam of rectangular cross-section of width b and depth d, is subjected to a shear force F, the maximum shear stress induced will be
In designing a connecting rod, it is considered like __________ for buckling about Y-axis.
A steel containing __________ 0.8% carbon is known as hypo-eutectoid steel.
When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the
Which one of the following loading is considered for the design of axles?
The shear stress in a beam varies from zero at the outer fibres to a maximum at the neutral surface.
In a flange coupling, the keys are staggered at __________ along the circumference of the shafts in order to divide the weakening effect caused by key ways.
A tapered key which fits in a key way in the hub and the bottom of which is shaped to fit the curved surface of the shaft, is known as hollow saddle key.
The diameter of washer is generally taken bigger than the nut size.
If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value?
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49 videos|70 docs|77 tests
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