An imaginary circle which by pure rolling action gives the same motion as the actual gear, is called

A. Co-axial B. Perpendicular C. Parallel D. None of these

A. Directly as load B. Inversely as square of load C. Inversely as cube of load D. Inversely as fourth power of load

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

A. Margin B. Pitch C. Back pitch D. Diagonal pitch