Machine Design When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be Square threads Acme threads Knuckle threads Buttress threads Square threads Acme threads Knuckle threads Buttress threads ANSWER DOWNLOAD EXAMIANS APP
Machine Design The maximum efficiency of a square threaded screw is (1 + cosφ)/ (1 - sinφ) (1 + sinφ)/ (1 - sinφ) (1 - sinφ)/ (1 + sinφ) (1 - sinφ)/ (1 + cosφ) (1 + cosφ)/ (1 - sinφ) (1 + sinφ)/ (1 - sinφ) (1 - sinφ)/ (1 + sinφ) (1 - sinφ)/ (1 + cosφ) ANSWER DOWNLOAD EXAMIANS APP
Machine Design In a steam engine, the piston rod is usually connected to the cross-head by means of a Oldham coupling Universal joint Cotter joint Knuckle joint Oldham coupling Universal joint Cotter joint Knuckle joint ANSWER DOWNLOAD EXAMIANS APP
Machine Design A tap bolt Has head at one end and other end fits into a tapped hole in the other part to be joined Has pointed threads Has a head on one end and a nut fitted to the other Has both the ends threaded Has head at one end and other end fits into a tapped hole in the other part to be joined Has pointed threads Has a head on one end and a nut fitted to the other Has both the ends threaded 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) πd.t.τu π/4 × d².τu π/4 × d² × tτu t.τu πd.t.τu π/4 × d².τu π/4 × d² × tτu t.τu ANSWER DOWNLOAD EXAMIANS APP
Machine Design Allen bolts are Self locking bolts Provided with hexagonal depression in head Designed for shock load Used in aircraft application Self locking bolts Provided with hexagonal depression in head Designed for shock load Used in aircraft application ANSWER DOWNLOAD EXAMIANS APP
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