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MODERN PUBLICATION-ALTERNATING CURRENTS-EXERCISE
- Why the core of a transformer made of a magnetic material of high perm...
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- A step up transformer converts a low input voltage into a high output ...
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- Describe the use of transformer for long distance transmission of a.c.
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- A transformer of 100% efficiency has 500 turns in the primary and 10,0...
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- Can a trasnformer be helpful in reducing the cost of transmission of e...
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- What is the fucntion of a choke coil in fluorescent tube?
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- Show that an ideal inductor does not dissipate power in an ac circuit.
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- Answer the following questions: Why is choke coil needed in the use of...
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- Why is choke preferred to rheostat in controlling a.c. supply.
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- Which of the best method of reducing current in an a.c. circuit and wh...
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- Why choke coil cannot be used in d.c.?
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- Radio frequency choke is air cored, whereas as audio frequency choke i...
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- Find r.m.s value of voltage give in the figure.
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- The variation with time t of the output E of an alternating voltage su...
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- The variation with time t of the output E of an alternating voltage su...
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- In the circuit shows find the phase difference between the currents th...
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- In the circuit shows find the phase difference between the potential d...
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- Can a capacitor of suitable capacitance replace a choke coil in an ac ...
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- What do you mean by the average value of a.c. ? Derive the expression ...
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- What is meant by average value of alternating current? Obtain an expre...
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