Machine Design In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing Is maximum at zero speed and decreases monotonically with increase in speed Becomes minimum at an optimum speed and then increases with further increase in speed Remains constant at all speeds Is minimum at zero speed and increases monotonically with increase in speed Is maximum at zero speed and decreases monotonically with increase in speed Becomes minimum at an optimum speed and then increases with further increase in speed Remains constant at all speeds Is minimum at zero speed and increases monotonically with increase in speed ANSWER DOWNLOAD EXAMIANS APP
Machine Design Which of the following is an anti-friction bearing? Journal bearing Collar bearing Pedestal bearing Needle bearing Journal bearing Collar bearing Pedestal bearing Needle bearing ANSWER DOWNLOAD EXAMIANS APP
Machine Design The bearing characteristic number in a hydrodynamic bearing depends upon Length, width and speed Viscosity, speed and bearing pressure Viscosity, speed and load Length, width and load Length, width and speed Viscosity, speed and bearing pressure Viscosity, speed and load Length, width and load 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 2W/3 8W/9 W/2 W/9 2W/3 8W/9 W/2 W/9 ANSWER DOWNLOAD EXAMIANS APP
Machine Design The piston pin bearings in heavy duty diesel engines are Cylindrical roller bearings Needle roller bearings Tapered roller bearings Spherical roller bearings Cylindrical roller bearings Needle roller bearings Tapered roller bearings Spherical roller bearings ANSWER DOWNLOAD EXAMIANS APP
Machine Design In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be 25 17 21 15 25 17 21 15 ANSWER DOWNLOAD EXAMIANS APP
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