Addendum of a gear means

Height of gear tooth above pitch circle

Total gear tooth height

Clearance of gear tooth

Height of gear tooth below pitch circle.

Increases

remains the same

decrease

none of the above

55 degree

57.5 degree

60 degree

45 degree

110 degree

100 degree

90 degree

118 degree

It is more heat resistant

has higher tool life

can be used at higher cutting speed

all the above