Q1) A 250-KVA, 600-V, 50-Hz, Y-connected synchronous generator with a rated field current of 8 A was tested, and followi

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Q1 A 250 Kva 600 V 50 Hz Y Connected Synchronous Generator With A Rated Field Current Of 8 A Was Tested And Followi 1 (81.98 KiB) Viewed 75 times

Q1) A 250-KVA, 600-V, 50-Hz, Y-connected synchronous generator with a rated field current of 8 A was tested, and following graph is obtained. Air-gap line Vt Open-circuit voltage 660V 300V OCC 4A SCC 300A 0 8A O' Field excitation Also, when a DC voltage of 12 V was applied to two of the terminals, a current of 24 A was measured. (a) Find the values of the armature resistance and the approximate synchronous reactance in ohms that would be used in the generator model at the rated conditions. (b) Draw the equivalent circuit of the synchronous generator. Q2) Designed for use in Turkey, the 50kW synchronous generator has a synchronous speed of 600 revolutions per minute. This generator will be to exported the United States, where power lines operate at 60 hertz. (a) What is the current pole count of the synchronous generator? (b) How many poles must the generator have to operate at the same synchronous speed in the United States? 12A Short-circuit armature current