Machine Design In hydrodynamic bearings Do not require external supply of lubricant The oil film pressure is generated only by the rotation of the journal Grease is used for lubrication The oil film is maintained by supplying oil under pressure Do not require external supply of lubricant The oil film pressure is generated only by the rotation of the journal Grease is used for lubrication The oil film is maintained by supplying oil under pressure ANSWER DOWNLOAD EXAMIANS APP
Machine Design In a hydrodynamic lubricated bearing There is a thick film of lubricant between the journal and the bearing There is no lubricant between the journal and the bearing The lubricant is forced between the journal and the bearing, by external pressure There is a thin film of lubricant between the journal and the bearing There is a thick film of lubricant between the journal and the bearing There is no lubricant between the journal and the bearing The lubricant is forced between the journal and the bearing, by external pressure There is a thin film of lubricant between the journal and the bearing ANSWER DOWNLOAD EXAMIANS APP
Machine Design In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole) 1 d 1.5 d 2 d 2.5 d 1 d 1.5 d 2 d 2.5 d ANSWER DOWNLOAD EXAMIANS APP
Machine Design In worm gears, the angle between the tangent to the pitch helix and an element of the cylinder, is known as Pitch lead angle Pressure angle None of these Helix angle Pitch lead angle Pressure angle None of these Helix angle ANSWER DOWNLOAD EXAMIANS APP
Machine Design Two helical springs of the same material and of equal circular cross-section, length and number of turns, but having radii 80 mm and 40 mm, kept concentrically (smaller radius spring within the larger radius spring), are compressed between two parallel planes with a load W. The inner spring will carry a load equal to W/9 W/2 2W/3 8W/9 W/9 W/2 2W/3 8W/9 ANSWER DOWNLOAD EXAMIANS APP
Machine Design According to I.B.R., shearing resistance required to shear off the rivet per pitch length (in double shear) is (where n = Number of rivets per pitch length) 1.875 × (π/4) d² × τ × n 2 × (π/4) d² × τ × n (π/4) d² × τ × n 3 × (π/4) d² × τ × n 1.875 × (π/4) d² × τ × n 2 × (π/4) d² × τ × n (π/4) d² × τ × n 3 × (π/4) d² × τ × n ANSWER DOWNLOAD EXAMIANS APP
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