This problem is all about applying formulae properly.
Consider the core given in Fig.1. Relative permeability of the core material is 2000. a) What should be the coil current to achive a flux density of 2T when x-0. State your assumptions in the calcula...
Consider the core given in Fig.1. Relative permeability of the core material is 2000. a) What should be the coil current to achive a flux density of 2T when x-0. State your assumptions in the calculations b) Current in the coil is kept constant at the value found in part (a) as the armature moves to x-2 mm. What is the flux density when x-2 mm? alculate the energy stored in the magnetic circuit when x-0 and current in part...
Q1 9 Fig.1 Cross sectional area of the core is 5 cm2. N-100, i) Draw flux linkage current characteristics of the device shown in Fig. 1 for g- 3 mm and lmm ii) What is the energy stored in this core for i 10 A iii) What is the coenergy stored for 1-10 A iii) Derive an expression for the inductance of the coil. v) What is the inductance of the coil? vi) Calculate the average force on the armature...
Chapter 2 Question A toroidal core of relative permeability 1000 has a mean diameter of 300 mm and a cross sectional area of 6 cm". The core is wound with 1000 turns. If a dc current establishes a flux in the core of 6 x 10-4 Webers, determine: (a) (1) the magnetic flux density. (ii) the inductance. (iii) the magnetic intensity (H). (iv) the stored energy.
2. The magnetic circuit of Fig. 1 consists of rings of magnetic material in a stack of height h. The rings have inner radius Ri and outer radius Ro. Assume that the iron is of infinite permeability (μ → x) and neglect the effects of magnetic leakage and fringing Ri N turns For Ri-3.2 cm, Roー4.1 cm, ћ-1.8 cm, g = 0.15 cm, N-72 turns, calculate a. The mean core length le and the core corss-sectional area Ac. b. The...