Machine Design In Vickers hardness testing, the pyramid indentor apex is 122° 40° 152° 136° 122° 40° 152° 136° 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.τu πd.t.τu t.τu π/4 × d² × tτu π/4 × d².τu πd.t.τu t.τu π/4 × d² × tτu ANSWER DOWNLOAD EXAMIANS APP
Machine Design When a machine member is subjected to torsion, the torsional shear stress set up in the member is Zero at the centroidal axis and maximum at the outer surface of the member Maximum at both the centroidal axis and outer surface of the member Maximum at the centroidal axis and zero at the outer surface of the member Zero at both the centroidal axis and outer surface of the member Zero at the centroidal axis and maximum at the outer surface of the member Maximum at both the centroidal axis and outer surface of the member Maximum at the centroidal axis and zero at the outer surface of the member Zero at both the centroidal axis and outer surface of the member ANSWER DOWNLOAD EXAMIANS APP
Machine Design In hydrostatic bearings The Oil film pressure is generated only by the rotation of the journal The oil film is maintained by supplying oil under pressure Grease is used for lubrication Do not require external supply of lubricant The Oil film pressure is generated only by the rotation of the journal The oil film is maintained by supplying oil under pressure Grease is used for lubrication Do not require external supply of lubricant ANSWER DOWNLOAD EXAMIANS APP
Machine Design The circumferential and longitudinal strains in a cylindrical boiler under internal steam pressure are εc and εl respectively. The change in volume of the boiler cylinder per unit volume will be εc + 2εl εc + εl² 2εc + εl εc² + εl εc + 2εl εc + εl² 2εc + εl εc² + εl ANSWER DOWNLOAD EXAMIANS APP
Machine Design The objective of 'crowning' of the flat pulleys of belt drive is to Prevent the belt from running off the pulley Increase the power transmission capacity Increase the belt velocity Prevent the belt joint from damaging the belt surface Prevent the belt from running off the pulley Increase the power transmission capacity Increase the belt velocity Prevent the belt joint from damaging the belt surface ANSWER DOWNLOAD EXAMIANS APP
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