Four Quadrant Operation  Motor is driving a hoist consisting of a cage with or without load, a rope wound on to a drum to hoist the cage and a balanc
{"Image DocumentName": "Four Quadrant Operation", "Image ImageDescription": "Dr. K. R. Rajagopal. IIT Delhi. Four Quadrant Operation. Motor is driving a hoist consisting of a cage with or without load, a rope wound on to a drum to hoist the cage and a balance weight of magnitude greater than that of the empty cage but less than that of the loaded cage. The arrow in the figure indicates the actual directions of the motor torque, load torque and motion in four quadrants. The load torque of the hoisting mechanism is of active type and assumed to be constant due to negligible friction and windage for low speed hoist.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}