Machine Design For tight leakage joints, following type of thread is best suited Metric Buttress Square NPT (national pipe threads). Metric Buttress Square NPT (national pipe threads). ANSWER DOWNLOAD EXAMIANS APP
Machine Design The bearings of heavy series have capacity __________ over the medium series. 40 to 50% 20 to 30% 30 to 40% 10 to 20% 40 to 50% 20 to 30% 30 to 40% 10 to 20% ANSWER DOWNLOAD EXAMIANS APP
Machine Design The ratio of driving tensions for flat belts, neglecting centrifugal tension, is (where T₁, and T₂ = Tensions on the tight and slack sides of belt respectively, μ = Coefficient of friction, between the belt and pulley, and θ = Angle of contact) log (T₁/T₂) = μθ T₁/T₂ = μθ T₁/T₂ = log μθ T₁/T₂ =eμθ log (T₁/T₂) = μθ T₁/T₂ = μθ T₁/T₂ = log μθ T₁/T₂ =eμθ ANSWER DOWNLOAD EXAMIANS APP
Machine Design If a load W is applied instantaneously on a bar; Then the stress induced in bar will Depend on other considerations Decrease with decrease in y Be independent of ratio of mass of load W to mass of bar (y) Increase with increase in y Depend on other considerations Decrease with decrease in y Be independent of ratio of mass of load W to mass of bar (y) Increase with increase in y ANSWER DOWNLOAD EXAMIANS APP
Machine Design The stiffness of a closely coiled helical spring subjected to an axial load W is equal to (where G = Modulus of rigidity, and n = Number of active coils) Gd⁴/ 8D²n Gd3/ 8D3n Gd⁴/ 4D3n Gd⁴/ 8D3n Gd⁴/ 8D²n Gd3/ 8D3n Gd⁴/ 4D3n Gd⁴/ 8D3n ANSWER DOWNLOAD EXAMIANS APP
Machine Design The railway carriage couplings have Buttress threads Knuckle threads Acme threads Square threads Buttress threads Knuckle threads Acme threads Square threads ANSWER DOWNLOAD EXAMIANS APP
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