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प्रश्न
What type of current is given by (i) a dry cell, and (ii) a power House generator?
उत्तर
| Device | Type of current given | |
| 1. | Dry cell | D.C. current |
| 2. | A power house generator | A.C. current |
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संबंधित प्रश्न
In what respect does the construction of an A.C. generator differ from that of a D.C. generator?
Name some sources of direct current and some of alternating current.
State an important advantage of using alternating current (a.c.) over direct current (d.c.).
Alternating current : oscillatory :: Direct current : _______
Match the columns.
| Column A | Column B |
| 1) Direct current | a) Oscillatory |
| 2) Alternating current | b) Non oscillatory |
The frequency of the alternating current is 50 Hz.
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
Answer the following questions based on the given graph.
- Identify which curve shows AC and DC.
- What is the frequency of AC and DC?
Why is an alternating current (A.C.) considered to be advantageous over direct current (D.C.) for the long distance transmission of electric power?
