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Draw a labelled diagram of a moving coil galvanometer. State the principle on which it works. Deduce an expression for the torque acting on a rectangular cur...
I. n a sense, coil design for induc-tion heating is built upon a large store of empirical data whose development springs from sev-eral simple inductor geometries such as the solenoid coil. Because of this, coil design is generally based on experi-ence. This series of articles reviews the fundamental electrical consider-ations in the design of ...
The simple view of the construction of the moving coil instrument is shown in the figure. It consists of a powerful permanent shoe magnet. A light rectangular coil of many turns of fine wire is wound on a light aluminum former. An iron core is inserted inside the coil to reduce reluctance for the magnetic lines of force.
Draw a neat and labelled diagram of suspended coil type moving coil galvanometer. Advertisements. Solution 1. Suspended type of moving coil galvanometer:- PQRS = Rectangular coil. W = Thin phosphor bronze wire suspension. M = Plane mirror. H = Helical spring. C = Soft iron cylinder. I = Current through the coil. Solution 2.
Moving Coil Galvanometer Construction and Diagram. The moving coil galvanometer is made up of a rectangular coil that has many turns, and it is usually made of thinly insulated or fine copper wire that is wounded on a metallic frame. The coil is free to rotate about a fixed axis.
(a) Draw a labelled diagram of a moving coil galvanometer. Describe briefly its principle and working. (b) Answer the following : (i) Why is it necessary to introduce a cylindrical soft iron core inside the coil of a galvanometer. (ii) Increasing the current sensitivity of a galvanometer may not necessarily increase its voltage sensitivity.
The basic principle of a moving coil galvanometer is that when a current carrying coil is placed in a magnetic field, it experiences a torque. When a current I is passed through the coil, the torque experienced is given by τ = N I A B s i n θ Where N = No. of turns of the coil, A = Area of the coil B = Magnetic field and
