Advertisements
Advertisements
Question
Answer the following questions based on the given graph.
- Identify which curve shows AC and DC.
- What is the frequency of AC and DC?
Advertisements
Solution
- Straight line: DC (Direct current)
Curve: AC (Alternating current) - Frequency = `1/"Time period"`
∴ AC = 1 Hz and DC = 0 Hz
APPEARS IN
RELATED QUESTIONS
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?
What do you understand by the terms 'direct current' and 'alternating 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.
State an important advantage of using alternating current (a.c.) over direct current (d.c.).
The frequency of AC is _______.
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.
The frequency of electricity produced by DC generator is equal to ____________.
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?
In India, the frequency of the alternating current is, ______.
Define the following:
Frequency
Define the following:
Rectifier
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?
