Machine Design In an oil lubricated journal bearing, the coefficient of friction between the journal and the bearing 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 Is maximum at zero speed and decreases monotonically with increase in speed ANSWER DOWNLOAD EXAMIANS APP
Machine Design The ends of the leaves of a semi-elliptical leaf spring are made triangular in order to Have variable bending moment (M) in each leaf Make M/I constant throughout the length of the leaf Permit each leaf to act as an overhanging beam Obtain variable moment of inertia (I) in each leaf Have variable bending moment (M) in each leaf Make M/I constant throughout the length of the leaf Permit each leaf to act as an overhanging beam Obtain variable moment of inertia (I) in each leaf ANSWER DOWNLOAD EXAMIANS APP
Machine Design The material used for brake lining should have __________ coefficient of friction. High None of these Moderate Low High None of these Moderate Low ANSWER DOWNLOAD EXAMIANS APP
Machine Design The acme threads are usually found on Screw cutting lathes Railway carriage couplings Feed mechanism of machine tools Spindles of bench vices Screw cutting lathes Railway carriage couplings Feed mechanism of machine tools Spindles of bench vices ANSWER DOWNLOAD EXAMIANS APP
Machine Design The property of a material which enables it to be drawn into wires with the application of a tensile force, is called Plasticity Elasticity Ductility Malleability Plasticity Elasticity Ductility Malleability ANSWER DOWNLOAD EXAMIANS APP
Machine Design When the pulley or other mating piece is required to slide along the shaft, a __________ sunk key is used. Rectangular Square None of these Parallel Rectangular Square None of these Parallel ANSWER DOWNLOAD EXAMIANS APP
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