Machine Design Screws used for power transmission should have Low efficiency Strong teeth Very fine threads High efficiency Low efficiency Strong teeth Very fine threads High efficiency ANSWER DOWNLOAD EXAMIANS APP
Machine Design Tearing resistance required to tear off the plate per pitch length is (where p = Pitch of rivets, d = Dia. of rivet hole, and σt = Permissible tensile stress for plate material) p.t.σt (p - d) t.σt p.d.σt p.t.σt (p - d) t.σt p.d.σt ANSWER DOWNLOAD EXAMIANS APP
Machine Design The process extensively used for making bolts and nuts is Cold peening Hot piercing Cold heading Extrusion Cold peening Hot piercing Cold heading Extrusion ANSWER DOWNLOAD EXAMIANS APP
Machine Design The shear modulus of resilience is proportional to (Shear stress)⁴ Shear stress (Shear stress)3 (Shear stress)² (Shear stress)⁴ Shear stress (Shear stress)3 (Shear stress)² ANSWER DOWNLOAD EXAMIANS APP
Machine Design The railway carriage couplings have Knuckle threads Buttress threads Acme threads Square threads Knuckle threads Buttress threads Acme threads Square threads ANSWER DOWNLOAD EXAMIANS APP
Machine Design When an open coiled helical compression spring is subjected to an axial compressive load, the maximum shear stress induced in the wire is (where D = Mean diameter of the spring coil, d = Diameter of the spring wire, K = Wahl's stress factor, and W = Axial compressive load on the spring) (2WD/ πd3) × K (4WD/ πd3) × K (WD/ πd3) × K (8WD/ πd3) × K (2WD/ πd3) × K (4WD/ πd3) × K (WD/ πd3) × K (8WD/ πd3) × K ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS