The lead angle of a worm is 22.5°. Its helix angle will be

A cotter joint is used to connect two __________ rods.

A. Co-axial

B. Perpendicular

C. Parallel

D. None of these

The rated life of a bearing varies

A. Directly as load

B. Inversely as square of load

C. Inversely as cube of load

D. Inversely as fourth power of load

The bending stress in a curved beam is

A. Zero at the centroidal axis

B. Zero at the point other than centroidal axis

C. Maximum at the neutral axis

D. None of these

The centre to centre distance between two consecutive rivets in a row, is called

A. Margin

B. Pitch

C. Back pitch

D. Diagonal pitch