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प्रश्न
Observe the following diagram and answer the questions.
- Explain the construction of the equipment shown in the figure.
- How is AC generated?
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उत्तर
- An AC generator consists of a rotating rectangular coil ABCD placed between the two poles of a permanent magnet. The coil is attached to the two rings R1 and R2 at both ends. The two stationary conducting brushes B1 and B2 are maintained and pushed independently on the corresponding rings R1 and R2.
The coil inside the magnetic field can be rotated mechanically from the outside by turning the two internal rings R1 and R2, which are coupled to an axle. The galvanometer is linked to the two brushes' outer ends to display the direction of current flow in the specified external circuit. - According to Fleming's right-hand rule, the current is induced in these arms in the direction ABCD. After half rotation, arm CD moves down and arm AB moves up. As a result, each segment's current flow switches direction, resulting in net-induced current flowing in the direction of DCBA. As a result, the polarity of the current in each arm changes after every turn, producing an alternating current.
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संबंधित प्रश्न
State the principle of an electric generator.
A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each______.
The device used for producing electric current is called a ______.
The essential difference between an AC generator and a DC generator is that
State whether the following statement is true or false.
An electric motor converts mechanical energy into electrical energy.
What type of generator is used at Power Stations?
State two ways in the which the current alternating current and direct current?
A d.c. generator is based on the principle of:
(a) electrochemical induction
(b) electromagnetic induction
(c) magnetic effect of current
(d) heating effect of current
Suggest two ways in an a.c. generator to produce a higher e.m.f.
State one advantage of using a.c. over d.c.
Explain the difference:
AC generator and DC generator.
The part of the AC generator that passes the current from the armature coil to the external circuit is ______.
Draw a neat diagram of an AC generator and explain its working.
To convert an AC generator into DC generator ____________.
What are the number of turns and area specified for the armature coil?
What is the magnetic flux through one turn at time \[t\]?
What is the total flux linkage for a coil with \[N\] turns?
What is the peak EMF of the rotating coil?
How is angular speed related to frequency of rotation \[n\]?
How is a generator driven in a hydroelectric plant?
