Machine Design Two closely coiled helical springs with stiffness k₁ and k₂ respectively are connected in series. The stiffness of an equivalent spring is given by (k₁ - k₂)/ (k₁ + k₂) (k₁ + k₂)/ (k₁ k₂) (k₁ k₂)/ (k₁ + k₂) (k₁ - k₂)/ (k₁ k₂) (k₁ - k₂)/ (k₁ + k₂) (k₁ + k₂)/ (k₁ k₂) (k₁ k₂)/ (k₁ + k₂) (k₁ - k₂)/ (k₁ k₂) ANSWER DOWNLOAD EXAMIANS APP
Machine Design According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be 63 to 70% 70 to 83% 45 to 60% 80 to 90% 63 to 70% 70 to 83% 45 to 60% 80 to 90% ANSWER DOWNLOAD EXAMIANS APP
Machine Design Crushing resistance required to crush the rivet per pitch length is p.d.σc n.d.t.σc (p - d) t.σc p.t.σc p.d.σc n.d.t.σc (p - d) t.σc p.t.σc ANSWER DOWNLOAD EXAMIANS APP
Machine Design If T₁ and T₂ are the tensions on the tight and slack sides of the belt respectively, and Tc is the centrifugal tension, then initial tension in the belt is equal to T₁ - T₂ + Tc T₁ + T₂ + Tc (T₁ + T₂ + Tc)/2 (T₁ - T₂ + Tc)/2 T₁ - T₂ + Tc T₁ + T₂ + Tc (T₁ + T₂ + Tc)/2 (T₁ - T₂ + Tc)/2 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The shear stress in a beam varies from zero at the outer fibers to a maximum at the________. Upper surface Lower surface None of these Neutral surface Upper surface Lower surface None of these Neutral surface ANSWER DOWNLOAD EXAMIANS APP
Machine Design Rankine's theory of failure is applicable for following type of materials Ductile Elastic Plastic Brittle Ductile Elastic Plastic Brittle ANSWER DOWNLOAD EXAMIANS APP
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