Please explain imprisonment of below judgement my majistrate court

Complainant and accused are called present, Judgment is pronounced in the open court, vide separate one, in the result the accused is found guilty of the offence U/s 138 of NI Act and convicted U/s 255 (2) Crpc, On questioning the convict about the quantum of sentence to be imposed against him, the convict submitted that he is the only earning member of his family and his entire family is depending on his earnings, hence prayed the court to take a lenient view in imposing punishment. By taking into consideration of the submission made by the convict, the convict is sentenced to undergo a simple imprisonment of one year and with fine of Rs.20,000/-. In default the convict has to undergo another simple imprisonment of three months. The remand period if any is ordered to be set off, the bail bonds and surety bonds if any are ordered to be canceled after appeal time is over. Convict is informed that he is having a right of appeal against the Judgment of this court to the Hon&#039ble District Court Visakhapatnam within 30 days.