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Recent questions tagged transformationratio
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1
GATE2014339
The load shown in the figure absorbs $4$ $kW$ at a power factor of $0.89$ lagging. Assuming the transformer to be ideal, the value of the reactance $X$ to improve the input power factor to unity is ___________.
asked
Feb 12, 2017
in
Electrical Machines
by
makhdoom ghaya
(
9.3k
points)
gate2014ee3
losslesstransformer
transformationratio
numericalanswers
0
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0
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2
GATE2014112
For a specified input voltage and frequency, if the equivalent radius of the core of a transformer is reduced by half, the factor by which the number of turns in the primary should change to maintain the same no load current is $1/4$ $1/2$ $2$ $4$
asked
Feb 12, 2017
in
Electrical Machines
by
makhdoom ghaya
(
9.3k
points)
gate2014ee1
transformationratio
corelosses
0
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0
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3
GATE2016149
A singlephase, $22 kVA, 2200 V/ 220 V, 50 Hz$, distribution transformer is to be connected as an autotransformer to get an output voltage of $2420 V$. Its maximum $kVA$ rating as an autotransformer is $22$ $24.2$ $242$ $2420$
asked
Jan 30, 2017
in
Power Systems
by
makhdoom ghaya
(
9.3k
points)
gate2016ee1
leakagereactance
transformationratio
magnetizationbranch
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