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Which Machine u will prefer to use at a place where
flammable gases are coming out & why ?
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Answer Posted / avinash n
Flame Proof Machines r prefered at a place where flammable
gases or vapours exists.
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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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