variations in load acting on a member
variations in properties of materials in a member
abrupt change of cross-section
all of these
elastic limit
Young's modulus
ultimate tensile strength
endurance limit
enhance the load carrying capacity of the jack
reduce the effort needed for lifting the working load
prevent the rotation of load being lifted
reduce the value of frictional torque
shaft B is better than shaft A
shaft A is better than shaft B
both the shafts are equally good
none of these
The power transmitted by V-belts is less than flat belts for the same coefficient of friction, arc of contact and allowable tension in the belts
The V-belt drive is used with large centre distance
The V-belt may be operated in either direction with tight side of the belt at the top or bottom
The ratio of driving tensions in V-belt drive is more than flat belt drives
