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Consider the following statements regarding improvement of efficiency of worm gear driver?

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Consider the following statements pertaining to the basic Lewis equation for the strength design of spur gear teeth

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When a pair of spur gears of the same material is in mesh the design is based on pinion.

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The dynamic load on a gear is due to

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The entire active face of the gear?

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Young’s modulus of gear material.

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If the bending moment diagram is a rectangle, it indicates that the beam is loaded by

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A. Unwin’s formula B. Wahl factor C. Reynold’s equation D. Lewis form factor

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The form factor of a spur gear tooth depends upon the:

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In the formulation of Lewis equation for toothed gearing, it is assumed that tangential tooth load acts on the

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1) Osborne Reynolds 2)Beauchamp Tower 3) Ball bearings:

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Shafts supporting helical gears must have only deep groove ball – bearings.

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Those characteristics which are applicable to

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The design of gear on account of Spott’s equation which account for dynamic load is based on

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The lead angle of worm is 22.5°. Its helix angle will be

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The Lewis equation for gear tooth with involute profile predicts

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In gears, interference takes place when

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The diameter of the solid shaft shall be

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The value of sommerfeld number is

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