Dynamic braking is very effective if the dc motor _________.

Rheostatic or dynamic braking:

• In this method, the electric motor is disconnected from the supply during the braking period and is reconnected across same electrical resistance
• The field winding is continuously excited from the supply in the same direction
• During the braking period all the kinetic energy of the rotating parts is converted into electrical energy and is dissipated across the electrical resistance
• Electrical energy not drawn by the motor during braking period
• It can be applied to both DC and AC motors
• It is very effective in the case of a separately excited dc motor