1. A dc shunt motor operating unloaded at an armature terminal voltage of 125 V is observed to be operating at a speed of 1420 r/min. When the motor is operated unloaded at the same armature terminal voltage but with an additional resistance of 82 in series with the shunt field, the motor speed is observed to be 1560 r/min Calculate the resistance of the shunt field. a. b. Calculate the motor speed which will result if the series resistance is increased from 8 Ω to 20 Ω. With the field resistance at its original value, calculate the motor speed if it is operated unloaded at a terminal voltage of 90 V c.

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Q: What happens when you use cables longer than the prescribed length in a network?.

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Three-Phase Transformers

Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.

Transformer

Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.