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प्रश्न
State the principle of an electric generator.
उत्तर १
Electric generator works on the principle of electromagnetic induction. Electricity is generated by rotating a coil inside magnetic field.
उत्तर २
An electric generator is based on the principle of electromagnetic induction. When a rectangular coil is rotated in a uniform magnetic field, an induced voltage is generated between the ends of the coil.
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संबंधित प्रश्न
Name the phenomenon which is made use of in an electric generator.
What is the major difference between the simple alternator and most practical alternators?
Complete the following sentence:
A generator with commutator produces ............... current.
In an a.c. generator the speed at which the coil rotates is doubled. How would this affect
- the frequency of output voltage,
- the maximum output voltage is doubled.
Explain the difference:
AC generator and DC generator.
A flat coil of wire rotates at a constant speed about an axis perpendicular to a uniform magnetic field. Draw a graph to show how the induced e.m.f. varies relative to the positions of the coil during its one complete rotation. At what position of the coil, the e.m.f. has the maximum value?
The part of the AC generator that passes the current from the armature coil to the external circuit is ______.
A coil of insulated copper wire is connected to a galvanometer forming a loop and a magnet is:
A: Held stationary
B: Moved away along its axis
C: Moved towards along its axis
D: There will be an induced current in
A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is withdrawn from inside the coil?
An AC generator is provided with ______ slip rings that rotate with the coil.
