In a centre lathe gear box for changing spindle speeds the provision for speeds is made in
A)Arithmetical progression
B)Geometrical progression
C)Cubical progression
D)Random members
E)Square progression

Question

Quizplus · Accepted Answer

In a centre lathe gear box, the provision for changing spindle speeds is made in geometrical progression. This allows for a wide range of speeds to be covered with a relatively small number of gears, ensuring that each speed change is proportional to the previous one, which is ideal for machining operations requiring precise control over cutting speeds.

In a Centre Lathe Gear Box for Changing Spindle Speeds