Machine Design In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing 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 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 ANSWER DOWNLOAD EXAMIANS APP
Machine Design In a belt drive, if the pulley diameter is doubled keeping the tension and belt width constant, then it will be necessary to Increase the key length Increase the key depth Decrease the key length Increase the key width Increase the key length Increase the key depth Decrease the key length Increase the key width ANSWER DOWNLOAD EXAMIANS APP
Machine Design Two shafts will have equal strength, if Twisting moment of both the shafts is same Material of both the shafts is same Diameter of both the shafts is same Angle of twist of both the shafts is same Twisting moment of both the shafts is same Material of both the shafts is same Diameter of both the shafts is same Angle of twist of both the shafts is same ANSWER DOWNLOAD EXAMIANS APP
Machine Design The anti-friction bearings Have low starting and low running friction at moderate speeds All of these Have high initial cost Can carry both radial and thrust loads Have low starting and low running friction at moderate speeds All of these Have high initial cost Can carry both radial and thrust loads ANSWER DOWNLOAD EXAMIANS APP
Machine Design A shaft is subjected to fluctuating loads for which the normal torque (T) and bending moment (M) are 1000 N-m and 500 N-m respectively. If the combined shock and fatigue factor for bending is 1.5 and combined shock and fatigue factor for torsion is 2, then the equivalent twisting moment for the shaft is 2000 N-m 2100 N-m 2050 N-m 2136 N-m 2000 N-m 2100 N-m 2050 N-m 2136 N-m ANSWER DOWNLOAD EXAMIANS APP
Machine Design The crest diameter of a screw thread is same as Minor diameter Core diameter Major diameter Pitch diameter Minor diameter Core diameter Major diameter Pitch diameter ANSWER DOWNLOAD EXAMIANS APP
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