Discussion
Two shunt generators are operated in parallel to
Answer: D
Correct answer: share the load and allow one to be taken out of service
Machines are paralleled for the same reasons in any power system: the load can be divided between them, a machine can be shut down for maintenance without interrupting supply, and the plant can be run near its efficient loading by bringing sets in and out as demand varies. Paralleling does not raise the voltage - that would require a series connection - and it does nothing to armature reaction in the individual machines.
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