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/2σt pd/4σt pd/3σt pd/σt pd/2σt pd/4σt pd/3σt pd/σt ANSWER DOWNLOAD EXAMIANS APP
Machine Design Euler’s formula for a mild steel column is not valid if the slenderness ratio is 120 60 90 100 120 60 90 100 ANSWER DOWNLOAD EXAMIANS APP
Machine Design Gear box is used For speed reduction To produce torque To increase efficiency of system To obtain variable speeds For speed reduction To produce torque To increase efficiency of system To obtain variable speeds 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 I.S. specifies following total number of grades of tolerances 20 22 18 16 20 22 18 16 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The distribution of the forces along the length of key fitted in a shaft Varies exponentially, being less near the torque-input end Varies linearly Varies exponentially, being more near the torque-input end Is uniform throughout Varies exponentially, being less near the torque-input end Varies linearly Varies exponentially, being more near the torque-input end Is uniform throughout ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS