- 1(current)
Q. No.In an ideal transformer, the turns ratio is \(\cfrac{N_p}{N_s}=\cfrac{1}{2} .\) The ratio \(V_s:V_p\) is equal to (the symbols carry their usual meaning):
| 1. | \(2:1\) | 2. | \(1:1\) |
| 3. | \(1:4\) | 4. | \(1:2\) |
Subtopic: Transformer |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA step-up transformer is connected to an AC mains supply of \(220~\text V\) to operate at \(11000~\text V, 88\) watt. The current in the secondary circuit, ignoring the power loss in the transformer, is:
| 1. | \(8~\text{mA}\) | 2. | \(4~\text{mA}\) |
| 3. | \(0.4~\text{A}\) | 4. | \(4~\text{A}\) |
Subtopic: Transformer |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA \(12~\text{V},60~\text{W}\) lamp is connected to the secondary of a step down transformer, whose primary is connected to ac mains of \(220~\text{V}\). Assuming the transformer to be ideal, what is the current in the primary winding?
1. \(0.37~\text{A}\)
2. \(0.27~\text{A}\)
3. \(2.7~\text{A}\)
4. \(3.7~\text{A}\)
1. \(0.37~\text{A}\)
2. \(0.27~\text{A}\)
3. \(2.7~\text{A}\)
4. \(3.7~\text{A}\)
Subtopic: Transformer |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA step-down transformer connected to an AC mains supply of \(220~\text{V}\) is made to operate at \(11~\text{V}\), \(44~\text{W}\) lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?
1. \(2~\text{A}\)
2. \(4~\text{A}\)
3. \(0.2~\text{A}\)
4. \(0.4~\text{A}\)
1. \(2~\text{A}\)
2. \(4~\text{A}\)
3. \(0.2~\text{A}\)
4. \(0.4~\text{A}\)
Subtopic: Transformer |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology- 1(current)
Q. No.
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