Machine Design For tight leakage joints, following type of thread is best suited Square Metric Buttress NPT (national pipe threads). Square Metric Buttress NPT (national pipe threads). ANSWER DOWNLOAD EXAMIANS APP
Machine Design In hydrostatic bearings The oil film is maintained by supplying oil under pressure Do not require external supply of lubricant Grease is used for lubrication The Oil film pressure is generated only by the rotation of the journal The oil film is maintained by supplying oil under pressure Do not require external supply of lubricant Grease is used for lubrication The Oil film pressure is generated only by the rotation of the journal 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/3a)] σ [1 + (2a/b)] σ [1 + (b/2a)] σ [1 + (3a/b)] σ [1 + (b/3a)] σ [1 + (2a/b)] σ [1 + (b/2a)] ANSWER DOWNLOAD EXAMIANS APP
Machine Design The objective of idler pulley in belt drive is to All the above objectives Decrease the tendency of belt to slip Increase the power transmission capacity Increase the wrap angle and belt tension All the above objectives Decrease the tendency of belt to slip Increase the power transmission capacity Increase the wrap angle and belt tension ANSWER DOWNLOAD EXAMIANS APP
Machine Design When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 90°, then they are known as Crown bevel gears Mitre gears Angular bevel gears Internal bevel gears Crown bevel gears Mitre gears Angular bevel gears Internal bevel gears ANSWER DOWNLOAD EXAMIANS APP
Machine Design Deep groove ball bearings are used for Heavy thrust load only Combined thrust and radial loads at high speed Radial load at high speed Small angular displacement of shafts Heavy thrust load only Combined thrust and radial loads at high speed Radial load at high speed Small angular displacement of shafts ANSWER DOWNLOAD EXAMIANS APP
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