Machine Design A spring of stiffness 1000 N/m is stretched initially by 100 mm from the undeformed position. The work required to stretch it by another 100 mm is 10 N-m 15 N-m 7 N-m 5 N-m 10 N-m 15 N-m 7 N-m 5 N-m ANSWER DOWNLOAD EXAMIANS APP
Machine Design A hollow saddle key is Provided in pairs at right angles and each key is to withstand torsion in one direction only A taper key which fits half in the key way of hub and half in the key way of shaft A taper key which fits in a key way of the hub and is flat on the shaft A taper key which fits in a key way of the hub and the bottom of the key is shaped to fit the curved surface of the shaft Provided in pairs at right angles and each key is to withstand torsion in one direction only A taper key which fits half in the key way of hub and half in the key way of shaft A taper key which fits in a key way of the hub and is flat on the shaft A taper key which fits in a key way of the hub and the bottom of the key is shaped to fit the curved surface of the shaft ANSWER DOWNLOAD EXAMIANS APP
Machine Design A sliding bearing in which although lubricant is present, the working surfaces __________ contact each other at least part of the time, is called boundary lubricated bearing. Either A or B None of these Partially Fully Either A or B None of these Partially Fully ANSWER DOWNLOAD EXAMIANS APP
Machine Design Set screws are Similar to small size tap bolts except that a greater variety of shapes of heads are available Similar to stud Slotted for a screw driver and generally used with a nut Used to prevent relative motion between parts Similar to small size tap bolts except that a greater variety of shapes of heads are available Similar to stud Slotted for a screw driver and generally used with a nut Used to prevent relative motion between parts ANSWER DOWNLOAD EXAMIANS APP
Machine Design The rolling contact bearings as compared to sliding contact bearings have Accuracy of shaft alignment All of these Low starting and low running friction except at very high speeds Small overall dimensions Accuracy of shaft alignment All of these Low starting and low running friction except at very high speeds Small overall dimensions ANSWER DOWNLOAD EXAMIANS APP
Machine Design If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value? Maximum principal stress theory Maximum distortion energy theory Maximum strain energy theory Maximum shear stress theory Maximum principal stress theory Maximum distortion energy theory Maximum strain energy theory Maximum shear stress theory ANSWER DOWNLOAD EXAMIANS APP
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