Radial ball bearings are typically found where;

1.   ?    slow rotation or oscillating movement is required
2.   ?    axial loads in both directions are normal
3.   ?    heavy loads at low speeds and are axially loaded.

A bevel gear can transmit power between:

1.   ?    two parallel shafts
2.   ?    non-parallel shafts whose axes intersect
3.   ?    shafts at any angle to each other.

What term is given to the part of the tooth inside the pitch circle?

1.   ?    Root circle
2.   ?    Dedendum
3.   ?    Addendum