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प्रश्न
Answer the following questions based on the given graph.
- Identify which curve shows AC and DC.
- What is the frequency of AC and DC?
उत्तर
- Straight line: DC (Direct current)
Curve: AC (Alternating current) - Frequency = `1/"Time period"`
∴ AC = 1 Hz and DC = 0 Hz
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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?
State an important advantage of alternating current over direct current.
What is the frequency of A.C. supply in India?
The frequency of direct current (d.c.) is:
(a) 0 Hz
(b) 50 Hz
(c) 60 Hz
(d) 100 H
State an important advantage of using alternating current (a.c.) over direct current (d.c.).
Match the columns.
| Column A | Column B |
| 1) Direct current | a) Oscillatory |
| 2) Alternating current | b) Non oscillatory |
Distinguish between Direct current and 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?
What is common to both direct and alternating current?
In India, the frequency of the alternating current is, ______.
The device used to convert AC to DC is called ______.
Define the following:
Frequency
Define the following:
Rectifier
Complete the correlation:
DC : Non-oscillatory current flowing in one direction : : AC : ______
Why is an alternating current (A.C.) considered to be advantageous over direct current (D.C.) for the long distance transmission of electric power?
