<p>Electrical engineers design, develop, test, and supervise the manufacture of electrical equipment, such as electric motors, radar and navigation systems, communications systems, or power generation equipment. Electrical engineers also design the electrical systems of automobiles and aircraft.</p>

<p>grammar, rules of a language governing the sounds, words, sentences, and other elements, as well as their combination and interpretation. The word grammar also denotes the study of these abstract features or a book presenting these rules.</p>