Machine Design The fatigue stress concentration factor is defined as The product of the endurance limits with and without stress concentration The ratio of endurance limit with stress concentration to the endurance limit without stress concentration The ratio of endurance limit without stress concentration to the endurance limit with stress concentration All of these The product of the endurance limits with and without stress concentration The ratio of endurance limit with stress concentration to the endurance limit without stress concentration The ratio of endurance limit without stress concentration to the endurance limit with stress concentration All of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design In order to avoid tearing of the plate at edge, the distance from the center line of the rivet hole to the nearest edge of the plate in terms of dia. of rivet d should be equal to 1.25 d 1.75 d 1 d 1.5 d 1.25 d 1.75 d 1 d 1.5 d ANSWER DOWNLOAD EXAMIANS APP
Machine Design The rivet head used for boiler plate riveting is usually Snap head Pan Head Conical head Counter sunk head Snap head Pan Head Conical head Counter sunk head 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/ 4D3n Gd⁴/ 8D²n Gd3/ 8D3n Gd⁴/ 8D3n Gd⁴/ 4D3n Gd⁴/ 8D²n Gd3/ 8D3n Gd⁴/ 8D3n ANSWER DOWNLOAD EXAMIANS APP
Machine Design Two helical springs of the same material and of equal circular cross-section, length and number of turns, but having radii 80 mm and 40 mm, kept concentrically (smaller radius spring within the larger radius spring), are compressed between two parallel planes with a load W. The inner spring will carry a load equal to W/9 8W/9 2W/3 W/2 W/9 8W/9 2W/3 W/2 ANSWER DOWNLOAD EXAMIANS APP
Machine Design Plastic flow in ductile materials Depends on other considerations Increases the seriousness of static loading stress concentration Has no effect on it Lessens the seriousness of static loading stress concentration Depends on other considerations Increases the seriousness of static loading stress concentration Has no effect on it Lessens the seriousness of static loading stress concentration ANSWER DOWNLOAD EXAMIANS APP
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