2. Sketch a dislocation loop in the form of a circle and specify the Burgers vector of the loop. Denote the portions of the loop that are edge and those that are screw. Given that edge and screw dislocations have somewhat different energies per unit length, would you expect dislocation loops generally to be circular in shape

B.Provide guards on power tools and other equipment with moving parts

Explanation:

A guard/ safeguard is a machine feature that is on/around an engineering equipment which can prevent the contact of a user with hazardous parts of the machines such as point of operation and rotating parts.The guard can be on power tools to enable an alternataive ways of switching off the equipment when a danger scenario occurs.When using a tool/equipment, safeguards must be on/active.