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Transformer

For a transfo...

Question

For a transformer, the turns ratio is $3$ and its efficiency is $0.75$ . The current flowing in the primary coil is $2 A$ and the voltage applied to it is $100 V$ . Then the voltage and the current flowing in the secondary coil are ________ respectively.

150 V, 1.5 A

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300 V, 0.5 A

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300 V, 1.5 A

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150 V, 0.5 A

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Solution

The correct option is A $300 V, 0.5 A$
Subscript s represents secondary coil and p represents primary coil .
Turns ratio $= 3$ ; Voltage (primary coil ) $V_{p}$ $= 100 V$
Current $I_{p}$ = $2 A$
$\frac{n_{s}}{n_{p}} = \frac{V_{s}}{V_{p}} = 3$
$V_{s} = 300$
Efficiency ( $η$ ) $= 0.75$
$η = \frac{V_{s} I_{s}}{V_{p} I_{p}} = 0.75$
$I_{s}$ $= 0.5 A$
Option B is correct

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For a transformer, the turns ratio is 3 and its efficiency is 0.75. The current flowing in the primary coil is 2A and the voltage applied to it is 100V. Then the voltage and the current flowing in the secondary coil are ________ respectively.

The correct option is A 300V,0.5ASubscript s represents secondary coil and p represents primary coil . Turns ratio=3; Voltage (primary coil ) Vp=100 VCurrent Ip=2 Ansnp=VsVp=3Vs=300Efficiency (η)=0.75η=VsIsVpIp=0.75Is=0.5 AOption B is correct

For a transformer, the turns ratio is $3$ and its efficiency is $0.75$ . The current flowing in the primary coil is $2 A$ and the voltage applied to it is $100 V$ . Then the voltage and the current flowing in the secondary coil are ________ respectively.