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Recent questions tagged efficiency
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GATE2013-9
A single-phase transformer has no-load loss of $64W$,as obtained from an open-circuit test.when a short-circuit test is performed on it with $90\%$ of the rated current flowing in its both $LV$ and $HV$ winding,the measured loss is $81W$.The transformer has maximum efficiency when ... $80.0\: \%$ of the rated current. $88.8 \:\%$ of the rated current.
asked
Feb 12, 2017
in
Electrical Machines
by
piyag476
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1.5k
points)
gate2013-ee
efficiency
winding
0
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0
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2
GATE2016-1-47
A $DC$ shunt generator delivers $45 A$ at a terminal voltage of $220 V$. The armature and the shunt field resistances are $0.01 \Omega$ and $44 \Omega$ respectively. The stray losses are $375 W$. The percentage efficiency of the $DC$ generator is _________.
asked
Jan 30, 2017
in
Electrical Machines
by
makhdoom ghaya
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9.2k
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gate2016-ee-1
efficiency
core-losses
misc-losses
numerical-answers
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