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प्रश्न
An ideal transformer has 100 turns in the primary and 250 turns in the secondary. The peak value of the AC is 28 V. The rms secondary voltage is nearest to ______
विकल्प
100 V
70 V
50 V
40 V`
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उत्तर
An ideal transformer has 100 turns in the primary and 250 turns in the secondary. The peak value of the AC is 28 V. The rms secondary voltage is nearest to 50 V.
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संबंधित प्रश्न
Derive an expression for ratio of e.m.f.s and currents in terms of number of turns in primary and secondary coil.
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(A) 600
(B) 500
(C) 400
(D) 300
The primary coil of an ideal step-up transformer has 100 turns and the transformation ratio is also 100. The input voltage and power are 220 V and 1100 W, respectively. Calculate the
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(b) current in the primary
(c) a voltage across secondary
(d) current in secondary
(e) power in secondary
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……… energy is converted into …………energy by an electric motor.
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(vii) Is output and input power equal?
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