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Recent questions tagged transformer-core
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GATE Electrical 2015 Set 2 | Question: 20
Find the transformer ratios $a$ and $b$ such that the impedance ($Z_{in}$) is resistive and equals $2.5 \Omega$ when the network is excited with a sine wave voltage of angular frequency of $5000$ rad/s. $a = 0.5, b = 2.0$ $a = 2.0, b = 0.5$ $a = 1.0, b = 1.0$ $a = 4.0, b = 0.5$
makhdoom ghaya
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Power Systems
Feb 12, 2017
by
makhdoom ghaya
9.3k
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gate2015-ee-2
turn-ratio
transformer-core
eddy-current
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2
GATE Electrical 2016 Set 1 | Question: 46
A single-phase $400 V, 50 Hz$ transformer has an iron loss of $5000 W$ at the rated condition. When operated at $200 V, 25 Hz$, the iron loss is $2000 W$. When operated at $416 V, 52 Hz$, the value of the hysteresis loss divided by the eddy current loss is _______.
makhdoom ghaya
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Electrical Machines
Jan 30, 2017
by
makhdoom ghaya
9.3k
points
gate2016-ee-1
transformer-winding
transformer-core
hysterisis-loss
numerical-answers
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