T1 - T2 + Tc
T1 + T2 + Tc
(T1 - T2 + Tc)/2
(T1 + T2 + Tc)/2
minor diameter
major diameter
pitch diameter
none of these
normalising
full annealing
process annealing
spheroidising
A key is used as a temporary fastening
A key is subjected to tensile stresses
A key is always inserted parallel to the axis of the shaft
A key prevents relative motion between the shaft and boss of the pulley
less than 50 %
more than 50%
equal to 50%