1. A 1000-kVA and a 500-kVA, 1-phase transformers are connected to the same bus-bars on the primary side. The secondary e.m.fs. at no-load are 500 and 510 V respectively. The impedance voltage of the first transformer is 3.4% and of the second 5%. What cross-current will pass between them when the secondaries are connected together in parallel ? Assuming that the ratio of resistance to reactance is the same in each, what currents will flow in the windings of the two transformers when supplying a total load of 1200 kVA. [(i) 290 A (ii) 1577 and 900 A] (City & Guilds, London)
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.
Please help me solve problem 1 below. Please provide a clear and readable solution. Thanks in advance!!! The course subject is Electrical Machines 2.
NOTE: The answers are given below. Please provide the solution. If the answer given below is wrong, please give the correct answer. Thanks a lot!!!
![1. A 1000-kVA and a 500-kVA, 1-phase transformers are connected to the same bus-bars on the primary
side. The secondary e.m.fs. at no-load are 500 and 510 V respectively. The impedance voltage of the
first transformer is 3.4% and of the second 5%. What cross-current will pass between them when the
secondaries are connected together in parallel ? Assuming that the ratio of resistance to reactance is
the same in each, what currents will flow in the windings of the two transformers when supplying a
total load of 1200 kVA.
[(i) 290 A (ii) 1577 and 900 A] (City & Guilds, London)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc7943fae-eca6-43c1-8ab1-3c716e641f7d%2F321fb0f2-596f-4dd5-8454-9ddacb7167b7%2Fbj3cjdd_processed.png&w=3840&q=75)
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