Machine Design The stretching in a belt can be controlled by __________ the stress in the belt. None of these Increasing Reducing Both A and B None of these Increasing Reducing Both A and B 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) T₁/T₂ =eμθ 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 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The ratio of belt tensions (p1/p2) considering centrifugal force in flat belt is given byWhere m = mass of belt per meter (kg/m)v = belt velocity (m/s)f = coefficient of frictiona = angle of wrap (radians) (P1 - mv²)/ (P2 - mv²) = eᶠα P1 / P2 = eᶠα (P1 - mv²)/ (P2 - mv²) = e–ᶠα P1 / P2 = e–ᶠα (P1 - mv²)/ (P2 - mv²) = eᶠα P1 / P2 = eᶠα (P1 - mv²)/ (P2 - mv²) = e–ᶠα P1 / P2 = e–ᶠα ANSWER DOWNLOAD EXAMIANS APP
Machine Design A bolt is designed on the basis of __________ with a large factor of safety. Direct tensile stress Direct compressive stress Direct bending stress Direct shear stress Direct tensile stress Direct compressive stress Direct bending stress Direct shear stress ANSWER DOWNLOAD EXAMIANS APP
Machine Design Stress concentration in cyclic loading is more serious in Brittle materials Equally serious in both cases Ductile materials Depends on other factors Brittle materials Equally serious in both cases Ductile materials Depends on other factors ANSWER DOWNLOAD EXAMIANS APP
Machine Design The designation M 33 × 2 of a bolt means Metric threads with cross-section of 33 mm Metric threads of 33 mm outside diameter and 2 mm pitch Metric threads of 33 numbers in 2 cm Bolt of 33 mm nominal diameter having 2 threads per cm Metric threads with cross-section of 33 mm Metric threads of 33 mm outside diameter and 2 mm pitch Metric threads of 33 numbers in 2 cm Bolt of 33 mm nominal diameter having 2 threads per cm ANSWER DOWNLOAD EXAMIANS APP
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