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/ 8D²n Gd⁴/ 4D3n Gd3/ 8D3n Gd⁴/ 8D3n Gd⁴/ 8D²n Gd⁴/ 4D3n Gd3/ 8D3n Gd⁴/ 8D3n ANSWER DOWNLOAD EXAMIANS APP
Machine Design Spring index is Ratio of coil diameter to wire diameter Load required to produce unit deflection Its capability of storing energy Indication of quality of spring Ratio of coil diameter to wire diameter Load required to produce unit deflection Its capability of storing energy Indication of quality of spring ANSWER DOWNLOAD EXAMIANS APP
Machine Design For tight leakage joints, following type of thread is best suited Buttress Metric NPT (national pipe threads). Square Buttress Metric NPT (national pipe threads). Square ANSWER DOWNLOAD EXAMIANS APP
Machine Design A bench vice has following type of threads Buttress Acme Square Metric Buttress Acme Square Metric ANSWER DOWNLOAD EXAMIANS APP
Machine Design Set screws are Used to prevent relative motion between parts Similar to small size tap bolts except that a greater variety of shapes of heads are available Slotted for a screw driver and generally used with a nut Similar to stud Used to prevent relative motion between parts Similar to small size tap bolts except that a greater variety of shapes of heads are available Slotted for a screw driver and generally used with a nut Similar to stud ANSWER DOWNLOAD EXAMIANS APP
Machine Design If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, then formative number of teeth is written as T/sec³φ T sec²φ T cosecφ T sec³φ T/sec³φ T sec²φ T cosecφ T sec³φ ANSWER DOWNLOAD EXAMIANS APP
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