To avoid sudden loading of the prime mover
To avoid mechanical jerk to the shaft
generators are connected to the bus-bars or disconnected from them only under the floating condition A. To avoid sudden loading of the prime mover B. To avoid mechanical jerk to the shaft C. To avoid burning of switch contacts
All above
Answer is Wrong!
Answer is Right!
The correct answer is D. All above.
D.C. generators are connected to the bus-bars or disconnected from them only under the floating condition to avoid sudden loading of the prime mover, to avoid mechanical jerk to the shaft, and to avoid burning of switch contacts.
- Sudden loading of the prime mover can cause mechanical damage to the generator and the prime mover.
- Mechanical jerk to the shaft can cause damage to the generator and the prime mover.
- Burning of switch contacts can cause damage to the switch and the generator.
Therefore, it is important to connect and disconnect D.C. generators to the bus-bars only under the floating condition.