Question

A motor moving a conveyor belt with debris suddenly stops as a boulder of 150Kg is added to the conveyor. This condition could be a result of: a. A Short Circuit O b. The start resistor become open circuited, OC. Ground Fault d. An Overload

Answer 1

kg The motor stops because of an overload. When 150 boulder is added to the conveyor then the torque developed by motor become less than the load torque The start resistor is used only at the time of Starting of motor so that current drawn by motor stay within reasonable limit. So ook eetters taxth open circuiting of start motor will not affect the motor during running condition