Advertisements
Advertisements
प्रश्न
Draw a labelled diagram of an ac generator.
उत्तर
Main parts of an ac generator:
-
Armature − Rectangular coil ABCD
-
Filed Magnets − Two pole pieces of a strong electromagnet
-
Slip Rings − The ends of coil ABCD are connected to two hollow metallic rings R1 and R2.
-
Brushes − B1 and B2 are two flexible metal plates or carbon rods. They are fixed and are kept in tight contact with R1 and R2 respectively.
APPEARS IN
संबंधित प्रश्न
Obtain the expression for the emf induced in the rotating coil of N turns each of cross-sectional area A, in the presence of a magnetic field `vecB` .
State the principle of an ac generator and explain its working with the help of a labelled diagram. Obtain the expression for the emf induced in a coil. having N turns each of cross-sectional area A, rotating with a constant angular speed 'ω' in a magnetic field `vecB` directed perpendicular to the axis of rotation.
State the principle on which the AC generator works. Draw a labelled diagram and explain its working.
State A.C. generator underlying principle?
List out the advantages of stationary armature-rotating field system of AC generator.
Explain the working of a single-phase AC generator with necessary diagram.
A flexible metallic loop abcd in the shape of a square is kept in a magnetic field with its plane perpendicular to the field. The magnetic field is directed into the paper normally. Find the direction of the induced current when the square loop is crushed into an irregular shape as shown in the figure.
In an A.C. circuit, the peak value of voltage is 320 volt. Its effective voltage is ______
Obtain the expression for the instantaneous value of emf induced.
An AC generator spinning at a rate of 750 rev/min produces a maximum emf of 45 V. At what angular speed does this generator produce a maximum emf of 120 V?
