Q. In the calculation of induced shear stress in helical springs, the Wahl's stress factor is used to take care of

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Q. Creep in belt is due to

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Q. The minimum number of teeth on the pinion which will mesh with any gear without interference for 20° full depth involute teeth will be

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Q. A bolt of M 24 x 2 means that

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Q. In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)

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Q. In order to ensure self locking in a screw jack, it is essential that helix angle is __________ friction angle.

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Q. In case of thick cylinders, the tangential stress across the thickness of cylinder is

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Q. The cam follower generally used in automobile engines is

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Q. A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ . The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be

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Q. The malleable material should be plastic but is not essential to be so strong.

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Q. The temperature at which the new grains are formed in the metal is known as

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Q. Deep groove ball bearings are used for

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Q. The shear modulus of resilience is proportional to

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Q. In a sawn nut, a slot is cut about half way through the nut and a small screw is tightened between the nut and the bolt in order to produce more friction.

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Q. When a load W is applied suddenly on a bar of cross-sectional area A, the stress induced in the bar will be

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Q. In helical gears, the distance between similar faces of adjacent teeth along a helix on the pitch cylinders normal to the teeth, is called

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Q. The longitudinal joint in boilers is used to get the required

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Q. The Lewis equation for gear tooth with involute profile predicts the static load capacity of cantilever beam of uniform strength.

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Q. A basic shaft is one whose

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Q. When the effort is in between the fulcrum and load, the lever is said to be of third type.

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