Basic Belt Conveyors - FloStorConveyor Glossary of Terms. . belt is moved by electric power. This is called a BELT CONVEYOR. . The drive pulley is usually larger because it does the work.conveyor belt working principle,What is principle of conveyor belt - AnswersConveyor belt are the most commonly used powered conveyors because they are the most versatile and the least . How do belt conveyor systems work?