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Mechanical Engineering · all questions

Machine Design
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I.S. specifies following total number of grades of tolerances

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When a bolt and nut is made of mild steel, then the effective height of nut is made equal to (where d = Nominal diameter of bolt)

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The function of cutting oil when threading a pipe is to

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The dedendum is the radial distance from the

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If threads on a bolt are left hand, threads on nut will be

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If a load W is applied instantaneously on a bar; Then the stress induced in bar will

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Plastic flow in ductile materials

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Which of the following screw thread is used for power transmission in one direction only?

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When a close coiled helical spring is compressed, its wire is subjected to

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In levers, leverage is the ratio of

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The shear plane in case of bolts should

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In case of V belt drive

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In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set in order to

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The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.

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In a butt welded joint, the size of weld is __________ the throat of weld.

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In a transverse fillet welded joint, the size of weld is __________ the throat of weld.

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The radial distance of a tooth from the pitch circle to the top of the tooth is called

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When the screw in a mechanical screw jack rotates, the load kept on the top of it moves

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If a material fails below its yield point, failure would be due to

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In a steam engine, the piston rod is usually connected to the cross-head by means of a

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