Which of the following angle does the stator windings are geometrically divided?
Which of the following materials are used for induction motor shaft?
In the magnetic circuit shown in figure, the areas of cross-section of limbs B and C are respectively 0.01 m2 and 0.02 m2. Air gaps of lengths 1.0 mm and 2.0 mm respectively cut in the limbs B and C . If the magnetic medium can be assumed to have infinite permeability and flux in limb B is 1.0 Wb, the flux in limb A is
A cast electromagnet has an air gap of length 2 mm and an iron path of length 30 cm. Find the number of ampere-turns necessary to produce a flux density of 0.8 Wb/m2 in the gap. Neglect leakage and fringing. (For 0.8 Wb/m2 cast steel requires 750 AT/m).
An iron ring of mean length 50 cm has an air gap of 1 mm and a winding of 200 turns. If the permeability of the iron is 300 when a current of 1 A follows through coil, find the flux density in m Wb/m2
A circular iron core has an air gap cut in it and is excited by-passing direct current through a coil wound on it. The magnetic energy stored in the air gap and the iron core is