Machine Design Which of the following statement is correct regarding power screws? The efficiency of a self locking screw can not be more than 50% The efficiency of Acme (trapezoidal) thread is less than that of a square thread Both (A) and (B) If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50% The efficiency of a self locking screw can not be more than 50% The efficiency of Acme (trapezoidal) thread is less than that of a square thread Both (A) and (B) If the friction angle is less than the helix angle of the screw, then the efficiency will be more than 50% ANSWER DOWNLOAD EXAMIANS APP
Machine Design The root angle of a bevel gear is equal to Pitch angle - addendum angle Pitch angle + addendum angle Pitch angle - dedendum angle Pitch angle + dedendum angle Pitch angle - addendum angle Pitch angle + addendum angle Pitch angle - dedendum angle Pitch angle + dedendum angle 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 bending stress and curvature of the wire Combined effect of torsional shear stress and transverse shear stress in the wire Combined effect of transverse shear stress and bending 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 torsional shear stress and transverse shear stress in the wire Combined effect of transverse shear stress and bending stress in the wire Combined effect of transverse shear stress and curvature of wire ANSWER DOWNLOAD EXAMIANS APP
Machine Design A V-belt designated as B 4430 LP has 4430 mm as centre distance between pulleys 4430 mm as nominal pitch length 4430 mm as diameter of large pulley 4430 mm as diameter of small pulley 4430 mm as centre distance between pulleys 4430 mm as nominal pitch length 4430 mm as diameter of large pulley 4430 mm as diameter of small pulley ANSWER DOWNLOAD EXAMIANS APP
Machine Design The period during which the cam follower remains at rest, when cam moves, is known as Constant period Idle period Dwell period Fixed period Constant period Idle period Dwell period Fixed period ANSWER DOWNLOAD EXAMIANS APP
Machine Design Two shafts ‘A’ and ‘B’ under pure torsion are of identical length and identical weight and are made of the same material. The shaft ‘A’ is solid and the shaft ‘B’ is hollow. We can say that Shaft A is better than shaft B None of these Both the shafts are equally good Shaft B is better than shaft A Shaft A is better than shaft B None of these Both the shafts are equally good Shaft B is better than shaft A ANSWER DOWNLOAD EXAMIANS APP
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