Machine Design In hydrodynamic bearings The oil film pressure is generated only by the rotation of the journal Do not require external supply of lubricant Grease is used for lubrication The oil film is maintained by supplying oil under pressure The oil film pressure is generated only by the rotation of the journal Do not require external supply of lubricant Grease is used for lubrication The oil film is maintained by supplying oil under pressure ANSWER DOWNLOAD EXAMIANS APP
Machine Design A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where σ = Stress for a plate with no hole i.e. nominal stress) σ [1 + (3a/b)] σ [1 + (b/2a)] σ [1 + (2a/b)] σ [1 + (b/3a)] σ [1 + (3a/b)] σ [1 + (b/2a)] σ [1 + (2a/b)] σ [1 + (b/3a)] ANSWER DOWNLOAD EXAMIANS APP
Machine Design If two springs are in parallel then their overall stiffness will be Double Same Half None of these Double Same Half None of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design Deep groove ball bearings are used for Small angular displacement of shafts Radial load at high speed Heavy thrust load only Combined thrust and radial loads at high speed Small angular displacement of shafts Radial load at high speed Heavy thrust load only Combined thrust and radial loads at high speed ANSWER DOWNLOAD EXAMIANS APP
Machine Design If a spring is cut down into two springs, the stiffness of cut springs will be Half Same Double None of these Half Same Double None of these ANSWER DOWNLOAD EXAMIANS APP
Machine Design The size of a gear is usually specified by Pitch circle diameter Circular pitch Diametral pitch Pressure angle Pitch circle diameter Circular pitch Diametral pitch Pressure angle ANSWER DOWNLOAD EXAMIANS APP
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