The spelling of the word "Techa" can be explained using the International Phonetic Alphabet (IPA). The first syllable "Te-" is pronounced as /tɛ/ which means it is a "short e" sound. The second syllable "-cha" is pronounced as /tʃa/ which means it is a "ch" sound followed by a "short a" sound. Therefore, the correct spelling of the word "Techa" is in accordance with its phonetic transcription. It is important to use the IPA when explaining spelling, as it accurately represents the sounds of words.