Recent questions tagged turn-ratio - GO Electrical

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GATE2013-43
The following arrangement consists of an ideal transformer and an attenuator which attenuates by a factor of $0.8$. An ac voltage $V_{WX1}=100V$ is applied across $WX$ to get an open circuit voltage $Y_{YZ1} $ across $YZ$. Next, an ac voltage$V_{YZ2}=100V$ ... respectively, $125/100$ and $80/100$ $100/100$ and $80/100$ $100/100$ and $100/100$ $80/100$ and $80/100$

asked Feb 12, 2017 in Electrical Machines by piyag476 (1.5k points)

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GATE2015-2-20
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. $a = 0.5, b = 2.0$ $a = 2.0, b = 0.5$ $a = 1.0, b = 1.0$ $a = 4.0, b = 0.5$

asked Feb 12, 2017 in Power Systems by makhdoom ghaya (9.3k points)

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3

GATE2015-1-23
The primary mmf is least affected by the secondary terminal conditions in a Power transformer. Potential transformer. Current transformer. Distribution transformer.

asked Feb 12, 2017 in Power Systems by makhdoom ghaya (9.3k points)

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4

GATE2016-2-3
The following figure shows the connection of an ideal transformer with primary to secondary turns ratio of $1:100$. The applied primary voltage is $100 V$ (rms), $50 Hz, AC$. The rms value of the current $I$, in ampere, is _________.

asked Jan 30, 2017 in Electrical Machines by makhdoom ghaya (9.3k points)

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5

GATE2016-1-25
If an ideal transformer has an inductive load element at port $2$ as shown in the figure below, the equivalent inductance at port $1$ is $nL \\$ $n^{2}L \\$ $\dfrac{n}{L} \\$ $\dfrac{n^{2}}{L}$

asked Jan 30, 2017 in Electrical Machines by makhdoom ghaya (9.3k points)

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