Machine Design The efficiency of a square threaded screw is maximum if the helix angle is equal to(Where φ = Angle of friction) 90° - φ 45° + φ/2 45° - φ/2 45° - φ 90° - φ 45° + φ/2 45° - φ/2 45° - φ ANSWER DOWNLOAD EXAMIANS APP
Machine Design A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where σ = Stress for a plate with no hole i.e. nominal stress) σ [1 + (b/2a)] σ [1 + (3a/b)] σ [1 + (2a/b)] σ [1 + (b/3a)] σ [1 + (b/2a)] σ [1 + (3a/b)] σ [1 + (2a/b)] σ [1 + (b/3a)] ANSWER DOWNLOAD EXAMIANS APP
Machine Design If threads on a bolt are left hand, threads on nut will be Right hand with same pitch Left hand with same pitch Right hand with fine pitch Could be left or right hand Right hand with same pitch Left hand with same pitch Right hand with fine pitch Could be left or right hand ANSWER DOWNLOAD EXAMIANS APP
Machine Design A type of brake commonly used in motor cars is a Shoe brake Internal expanding brake Band and block brake Band brake Shoe brake Internal expanding brake Band and block brake Band brake ANSWER DOWNLOAD EXAMIANS APP
Machine Design The width of the pulley should be __________ width of the belt. None of these Less than Equal to Greater than None of these Less than Equal to Greater than ANSWER DOWNLOAD EXAMIANS APP
Machine Design In radial cams, the follower moves Along the cam axis In any direction irrespective of cam axis In a direction parallel to the cam axis In a direction perpendicular to the cam axis Along the cam axis In any direction irrespective of cam axis In a direction parallel to the cam axis In a direction perpendicular to the cam axis ANSWER DOWNLOAD EXAMIANS APP
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