Machine Design
In levers, leverage is the ratio of

Mechanical advantage to the velocity ratio
Load arm to the effort arm
Effort arm to the load arm
Load lifted to the effort applied

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Set screws are

Similar to stud
Slotted for a screw driver and generally used with a nut
Similar to small size tap bolts except that a greater variety of shapes of heads are available
Used to prevent relative motion between parts

ANSWER DOWNLOAD EXAMIANS APP