67) Screws jacks have multiple threads.

Answer is:

Disagree

Answer is:

Answer is:

Explanation:

The radial distance of a tooth from the pitch circle to the top of the tooth is called addendum.

Answer is:

The toughness of a material increases when it is heated.

The shear stress in a beam varies from zero at the neutral surface and maximum at the outer fibres.

The stress concentration in static loading is more serious in brittle materials and less serious in ductile materials.

The stress concentration in static loading is more serious in ductile materials and less serious in brittle materials.

Answer is: