Machine Design The shear plane in case of bolts should Never be across the threaded portion Be normal to threaded portion of shank Be across threaded portion of shank Be parallel to axis of bolt Never be across the threaded portion Be normal to threaded portion of shank Be across threaded portion of shank Be parallel to axis of bolt ANSWER DOWNLOAD EXAMIANS APP
Machine Design The efficiency of a square threaded screw is maximum if the helix angle is equal to(Where φ = Angle of friction) 45° - φ 45° + φ/2 90° - φ 45° - φ/2 45° - φ 45° + φ/2 90° - φ 45° - φ/2 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The shear stress in a beam varies from zero at the outer fibers to a maximum at the________. Neutral surface None of these Upper surface Lower surface Neutral surface None of these Upper surface Lower surface ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which of the following is a permanent fastening? Keys Bolts Rivets Cotters Keys Bolts Rivets Cotters ANSWER DOWNLOAD EXAMIANS APP
Machine Design According to Indian standard specifications, a Grey cast iron designated by 'FG 200' means that the Minimum tensile strength is 200 N/mm² Carbon content is 2% Maximum shear strength is 200 N/mm² Maximum compressive strength is 200 N/mm² Minimum tensile strength is 200 N/mm² Carbon content is 2% Maximum shear strength is 200 N/mm² Maximum compressive strength is 200 N/mm² ANSWER DOWNLOAD EXAMIANS APP
Machine Design The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of 0.55 0.65 0.75 0.45 0.55 0.65 0.75 0.45 ANSWER DOWNLOAD EXAMIANS APP
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