Throttle Position Sensor Most (TPI) throttle position indicator sensors have extra pins for extra functionality, but for this discussion the three wire design will be discussed. To help explain this, these three leads and their function as it relates to engine and transmission performance are analyzed.
In music, the tonic is the first scale degree of a diatonic scale and the tonal center or final resolution tone. The triad formed on the tonic note, the tonic chord, is thus the most significant chord. More generally, the tonic is the pitch upon which all other pitches of a piece are hierarchically referenced. Scales are named after their tonics, thus the tonic of the scale of C is the note C.
In music theory, the dominant triad (3-note chord) is a major triad, symbolized by the Roman numeral V, if it is within the major diatonic scale (for example G-B-D in C major). It is, however, a minor triad, denoted v, if it is within the minor diatonic scale (for example G-B â­ -D in C minor).ut another way, the key whose tonic is the dominant scale degree in the main key. If, for example, a piece is written in the key of C major, then the key of C is the tonic key. The key of G major is the dominant key since it is based on the dominant note for the key of C major.