Machine Design The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is 0.1 micron 0.01 micron 10 microns 1 micron 0.1 micron 0.01 micron 10 microns 1 micron ANSWER DOWNLOAD EXAMIANS APP
Machine Design A key way lowers The rigidity of the shaft The ductility of the shaft Both the strength and rigidity of the shaft The strength of the shaft The rigidity of the shaft The ductility of the shaft Both the strength and rigidity of the shaft The strength of the shaft ANSWER DOWNLOAD EXAMIANS APP
Machine Design A screw is said to be over hauling screw, if the Friction angle is more than helix angle Efficiency of screw is 100% Friction angle is equal to helix angle Friction angle is less than helix angle Friction angle is more than helix angle Efficiency of screw is 100% Friction angle is equal to helix angle Friction angle is less than helix angle ANSWER DOWNLOAD EXAMIANS APP
Machine Design A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be τ 2 τ 4 τ τ/2 τ 2 τ 4 τ τ/2 ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the speed of belt increases, The coefficient of friction between the belt and pulley increases The coefficient of friction between the belt and pulley decreases The power transmitted will decrease The power transmitted will increase The coefficient of friction between the belt and pulley increases The coefficient of friction between the belt and pulley decreases The power transmitted will decrease The power transmitted will increase ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the belt is transmitting maximum power, the belt speed should be (Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N)) √(3m /Pmax) √(Pmax / 3m) √(Pmax / 2m) √(Pmax / m) √(3m /Pmax) √(Pmax / 3m) √(Pmax / 2m) √(Pmax / m) ANSWER DOWNLOAD EXAMIANS APP
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