Machine Design The velocity factor for very accurately cut and ground metallic gears operating at velocities upto __________ are equal to 6/(6 + v). 15 m/s 12.5 m/s 20 m/s 10 m/s 15 m/s 12.5 m/s 20 m/s 10 m/s ANSWER DOWNLOAD EXAMIANS APP
Machine Design In hydrodynamic bearings Grease is used for lubrication The oil film is maintained by supplying oil under pressure The oil film pressure is generated only by the rotation of the journal Do not require external supply of lubricant Grease is used for lubrication The oil film is maintained by supplying oil under pressure The oil film pressure is generated only by the rotation of the journal Do not require external supply of lubricant ANSWER DOWNLOAD EXAMIANS APP
Machine Design When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the Middle Thread Head Shank Middle Thread Head Shank ANSWER DOWNLOAD EXAMIANS APP
Machine Design A screw is said to be over hauling screw, if the Efficiency of screw is 100% Friction angle is less than helix angle Friction angle is more than helix angle Friction angle is equal to helix angle Efficiency of screw is 100% Friction angle is less than helix angle Friction angle is more than helix angle Friction angle is equal to helix angle ANSWER DOWNLOAD EXAMIANS APP
Machine Design 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 0.99 0.97 0.98 0.96 0.99 0.97 0.98 0.96 ANSWER DOWNLOAD EXAMIANS APP
Machine Design According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in double shear) is (where n = Number of rivets per pitch length) 3 × (π/4) d² × τ × n (π/4) d² × τ × n 1.875 × (π/4) d² × τ × n 2 × (π/4) d² × τ × n 3 × (π/4) d² × τ × n (π/4) d² × τ × n 1.875 × (π/4) d² × τ × n 2 × (π/4) d² × τ × n ANSWER DOWNLOAD EXAMIANS APP
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