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sir please send me previous year questions of jspl through
which i could prepare myself fpr the test.
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Answer Posted / sipra das
plz mail me on my gmail
shipra.ds25@gmail.com
i ll be vry thankful to u.
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i have seen one 8.4 MW synchronous motor in a plant located in bellary it is fixed with brushless rotary rectifier ,anybody can explain its start up principle
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1)how to reduce the value of tan delta of trasformer and CB,bushing,CT&PT,CVT ? 2)how to reduce the resistance of CB contact and its operating time? 3)plz.....send me the project report on conditioning and monitoring of substation equipment on my email id (gusaiyogendra03@gmail.com)
A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.
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PLEASE SEND THE PREVIOUS YEARS QUESTION PAPERS OF RRB JUNIOR ENGINEER-ELECTRICAL
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