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प्रश्न
A power transmission line feeds input power at 2200 V to a step-down transformer with its primary windings having 300 turns. Find the number of turns in the secondary to get the power output at 220 V.
उत्तर
ns= ?
np= 3000
Ep= 2200 V
ES= 220 V
Since,
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संबंधित प्रश्न
Explain the construction and working of the transformer.
Draw a labeled diagram of a step-down transformer.
A transformer converts 240 V AC to 60 V AC. The secondary has 75 turns. The number of turns in primary are _______.
(A) 600
(B) 500
(C) 400
(D) 300
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The secondary windings of a transformer in which the voltage is stepped down are usually made of thicker wire than the primary. Explain why.
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State the underlying principle of a transformer. How is the large scale transmission of electric energy over long distances done with the use of transformers?
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A step-up transformer converts a low voltage into high voltage. Does it not violate the principle of conservation of energy? Explain.
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 ______
The line that draws power supply to your house from street has ______.
- zero average current.
- 220 V average voltage.
- voltage and current out of phase by 90°.
- voltage and current possibly differing in phase
