Question

insulators must be securely attached to any structure. insulators are designed to withstand which of the following stresses?

a. electrical

b. environmental

c. mechanical

d. all of the above

clear my choice

Explanation:

Insulators in electrical systems need to withstand electrical stresses (to insulate electricity), environmental stresses (like weather, temperature), and mechanical stresses (from installation, wind, etc.). So all the listed stresses apply.

Answer:

d. All of the above