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प्रश्न
The frequency of AC is _______.
पर्याय
20 Hz
50 Hz
25 Hz
75 Hz
उत्तर
The frequency of AC is 50 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?
What type of current is given by (i) a dry cell, and (ii) a power House generator?
State an important advantage of alternating current over direct current.
The frequency of direct current (d.c.) is:
(a) 0 Hz
(b) 50 Hz
(c) 60 Hz
(d) 100 H
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.
The frequency of the alternating current is 50 Hz.
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?
The device used to convert AC to DC is called ______.
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?
How is the type of current used in household supply different from the one given by a battery of dry cells?
