Machine Design For tight leakage joints, following type of thread is best suited Buttress Square Metric NPT (national pipe threads). Buttress Square Metric NPT (national pipe threads). ANSWER DOWNLOAD EXAMIANS APP
Machine Design Gear box is used 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 For speed reduction ANSWER DOWNLOAD EXAMIANS APP
Machine Design Machine screws are Similar to stud Slotted for a screw driver and generally used with a nut Similar to small size tap bolts except that a greater variety of shapes of heads are available Used to prevent relative motion between two parts Similar to stud Slotted for a screw driver and generally used with a nut Similar to small size tap bolts except that a greater variety of shapes of heads are available Used to prevent relative motion between two parts ANSWER DOWNLOAD EXAMIANS APP
Machine Design In the calculation of induced shear stress in helical springs, the Wahl's stress factor is used to take care of Combined effect of transverse shear stress and curvature of wire Combined effect of bending stress and curvature of the wire Combined effect of transverse shear stress and bending stress in the wire Combined effect of torsional shear stress and transverse shear stress in the wire Combined effect of transverse shear stress and curvature of wire Combined effect of bending stress and curvature of the wire Combined effect of transverse shear stress and bending stress in the wire Combined effect of torsional shear stress and transverse shear stress in the wire ANSWER DOWNLOAD EXAMIANS APP
Machine Design When a hole of diameter ‘d’ is punched in a metal of thickness 't', then the force required to punch a hole is equal to (where τu = Ultimate shear strength of the material of the plate) π/4 × d² × tτu πd.t.τu t.τu π/4 × d².τu π/4 × d² × tτu πd.t.τu t.τu π/4 × d².τu ANSWER DOWNLOAD EXAMIANS APP
Machine Design A key made from a cylindrical disc having segmental cross-section, is known as Gib head key Flat saddle key Feather key Woodruff key Gib head key Flat saddle key Feather key Woodruff key ANSWER DOWNLOAD EXAMIANS APP
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