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 A thin spherical shell of internal diameter d is subjected to an internal pressure p. If σt is the tensile stress for the shell material, then thickness of shell is equal to pd/4σt pd/3σt pd/σt pd/2σt pd/4σt pd/3σt pd/σt pd/2σt ANSWER DOWNLOAD EXAMIANS APP
Machine Design If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value? Maximum strain energy theory Maximum distortion energy theory Maximum principal stress theory Maximum shear stress theory Maximum strain energy theory Maximum distortion energy theory Maximum principal stress theory Maximum shear stress theory ANSWER DOWNLOAD EXAMIANS APP
Machine Design The material commonly used for machine tool bodies is Brass Mild steel Cast iron Aluminium Brass Mild steel Cast iron Aluminium ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which is correct statement? Stress concentration in static loading is Seriousness would depend on other factors Very serious in brittle materials and less serious in ductile materials Very serious in ductile materials and less serious in brittle materials Equally serious in both types of materials Seriousness would depend on other factors Very serious in brittle materials and less serious in ductile materials Very serious in ductile materials and less serious in brittle materials Equally serious in both types of materials ANSWER DOWNLOAD EXAMIANS APP
Machine Design The acme threads are usually found on Feed mechanism of machine tools Screw cutting lathes Spindles of bench vices Railway carriage couplings Feed mechanism of machine tools Screw cutting lathes Spindles of bench vices Railway carriage couplings ANSWER DOWNLOAD EXAMIANS APP
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