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Mechanical Engineering · all questions

Machine Design
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For a square key made of mild steel, the shear and crushing strength are related as

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The dynamic tooth load is due to

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When the material of key and shaft is same, and the width of key is one-fourth of the diameter of shaft (d), then length of key will be

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The permissible stress in the fillet weld is 100 N/mm². The fillet weld has equal leg lengths of 15 mm each. The allowable shearing load on the weldment per cm length of the weld is

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In a partial journal bearing, the angle of contact of the bearing with the journal is

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In a full journal bearing, the angle of contact of the bearing with the journal is

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If a bearing is designated by the number 305, it means that the bearing is of

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In a flat belt drive, if the slip between the driver and belt is 1%, between the belt and follower is 3% and driver and follower pulley diameters are equal, then velocity ratio of the drive will be

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The static tooth load should be __________ the dynamic load.

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The wear load should be __________ the dynamic load.

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In designing a key, it is assumed that the distribution of forces along the length of key

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The bearings of medium series have capacity __________ over the light series.

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If the size of a standard specimen for a fatigue testing machine is increased, the endurance limit for the material will

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The effective stress in wire ropes during normal working is equal to the stress due to

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When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 90°, then they are known as

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When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at right angle, then they are known as

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The crest diameter of a screw thread is same as

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The maximum efficiency of a square threaded screw is

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In order to have a connecting rod equally strong in buckling about X-axis and Y-axis, the moment of inertia about X-axis should be __________ the moment of inertia about Y-axis.

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The connecting rod bolts are tightened up so that tightening stress

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