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प्रश्न
State an important advantage of using alternating current (a.c.) over direct current (d.c.).
State one advantage of using an a.c. over the d.c.
उत्तर
An important advantage of using alternating current (a.c.) over direct current (d.c.) is that alternating current can be easily transformed to higher or lower voltage levels while it is difficult to do that with direct current.
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संबंधित प्रश्न
Out of an A.C. generator and a D.C. generator:
which one uses a commutator (split rings)?
which one uses slip rings?
What do you understand by the terms 'direct current' and 'alternating current'?
Name some sources of direct current and some of alternating current.
What is the frequency of A.C. supply in India?
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.
Alternating current : oscillatory :: Direct current : _______
Match the columns.
| Column A | Column B |
| 1) Direct current | a) Oscillatory |
| 2) Alternating current | b) Non oscillatory |
The alternating current is an oscillatory current.
Distinguish between Direct current and alternating current.
Conceptual question.
Can electroplating be possible with alternating current?
What is the role of fuse, used in series with any electrical appliance? Why should a fuse with defined rating not be replaced by one with a larger rating?
Define the following:
Frequency
Define the following:
Rectifier
Why is an alternating current (A.C.) considered to be advantageous over direct current (D.C.) for the long distance transmission of electric power?
How is the type of current used in household supply different from the one given by a battery of dry cells?
