Mechanical Engineering MCQs

Page No. 128

Pitch point on a cam is_________________?


aany point on pitch curve

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bthe point on cam pitch curve having the maximum pressure angle

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cany point on pitch circle

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dthe point on cam pitch curve having the minimum pressure angle

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A universal joint is an example of_____________________?


ahigher pair

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blower pair

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crolling pair

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dsliding pair

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View Answer lower pair

The example of lower pair is_______________?


ashaft revolving in a bearing

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bstraight line motion mechanisms

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cautomobile steering gear

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dall of the above

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View Answer all of the above

Which of the following is a lower pair_______________?


aball and socket i

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bpiston and cylinder

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ccam and follower

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dA. and B. above

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View Answer A. and B. above

Hooke’s law holds good up to____________________?


ayield point

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blimit of proportionality

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cbreaking point

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delastic limit

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The unit of Young’s modulus is__________________?


amm/mm

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bkg/cm

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ckg

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dkg/cm2

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View Answer kg/cm2

It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called______________________?


ainternal resistanpe

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btensile stress

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ctransverse stress

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dcompressive stress

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View Answer tensile stress

Modulus of rigidity is defined as the ratio of_________________?


alongitudinal stress and longitudinal strain

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bvolumetric stress and volumetric strain

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clateral stress and lateral strain

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dshear stress and shear strain

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The ultimate tensile stress of mild steel compared to ultimate compressive stress is__________________?


asame

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bmore

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cless

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dmore or less depending on other factors

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View Answer more

A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under_________________?


auniform throughout

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bincrease uniformly

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cfirst increase and then decrease

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dincrease uniformly first and then increase rapidly

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