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.τu π/4 × d² × tτu πd.t.τu t.τu π/4 × d².τu π/4 × d² × tτu πd.t.τu t.τu ANSWER DOWNLOAD EXAMIANS APP
Machine Design A V-belt designated as B 4430 LP has 4430 mm as diameter of large pulley 4430 mm as centre distance between pulleys 4430 mm as nominal pitch length 4430 mm as diameter of small pulley 4430 mm as diameter of large pulley 4430 mm as centre distance between pulleys 4430 mm as nominal pitch length 4430 mm as diameter of small pulley ANSWER DOWNLOAD EXAMIANS APP
Machine Design An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load ‘W’. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'. One-half Double One-fourth One-eighth One-half Double One-fourth One-eighth ANSWER DOWNLOAD EXAMIANS APP
Machine Design A bolt of uniform strength can be developed by Keeping the core diameter smaller than the diameter of the unthreaded portion None of these Keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt Keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt Keeping the core diameter smaller than the diameter of the unthreaded portion None of these Keeping the core diameter of threads equal to the diameter of unthreaded portion of the bolt Keeping the nominal diameter of threads equal to the diameter of unthreaded portion of the bolt ANSWER DOWNLOAD EXAMIANS APP
Machine Design Cap screws are Provided with detachable caps 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 Provided with detachable caps 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 ANSWER DOWNLOAD EXAMIANS APP
Machine Design A key made from a cylindrical disc having segmental cross-section, is known as Gib head key Feather key Flat saddle key Woodruff key Gib head key Feather key Flat saddle key Woodruff key ANSWER DOWNLOAD EXAMIANS APP