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प्रश्न
Why is an alternating current (A.C.) considered to be advantageous over direct current (D.C.) for the long distance transmission of electric power?
उत्तर
Long transmission distances of alternating current can be achieved with little loss of electrical energy. As a result, it is preferable to direct current for long-distance electric energy transmission.
संबंधित प्रश्न
What type of current is given by (i) a dry cell, and (ii) a power House generator?
Name some sources of direct current and some of alternating current.
Explain ‘Electric generator’ with the help of the following points:
- Diagram of an AC Generator with labelling
- Principle of an electric generator
- The function of slip rings
- Any two uses of a generator.
The frequency of AC is _______.
Alternating current : oscillatory :: Direct current : _______
Match the columns.
| Column A | Column B |
| 1) Direct current | a) Oscillatory |
| 2) Alternating current | b) Non oscillatory |
What is common to both direct and alternating current?
Answer the following questions based on the given graph.
- Identify which curve shows AC and DC.
- What is the frequency of AC and DC?
Complete the correlation:
DC : Non-oscillatory current flowing in one direction : : AC : ______
How is the type of current used in household supply different from the one given by a battery of dry cells?
