An electrical contact is an electrical circuit component found in electrical switches, relays and breakers. It is composed of two pieces of electrically conductive metal that pass electrical current or insulate when the gap between them is closed or open.
noun. Schwa is a vowel sound in an unstressed syllable, or the phonetic symbol É which is the International Phonetic Alphabet symbol for schwa. An unstressed syllable in a word, such as the a syllable in ago, is an example of schwa.oun. 1  A mid-central neutral vowel, typically occurring in unstressed syllables, as the final vowel of English sofa. 2  The symbol (&schwa;) used to represent an unstressed neutral vowel and, in some systems of phonetic transcription, a stressed mid-central vowel, as in but.
The English Plosive Sounds. Plosive (also known as stops, mutes, occlusives, explosives) sounds are formed by the air being completely blocked in the mouth and then suddenly released. A plosive is a consonant articulation with the following characteristics: We have 6 Plosive sounds in English: /p/b/t/d/k/g/.The Plosive consonant sounds are generally described on three bases: Some phoneticians opine that the degree of breath and muscular effort involved in the articulation between the groups voiceless and voiced are not the same.n other words, manner of articulation describes how the sound is produced. In the articulation of the plosive sounds, four phases can be distinguished: (i) Closing phase: In this stage the two organs move very close to one another and create a complete closure or blockade.