As these rotor windings or bars rotate within the magnetic field created by the stator magnetizing currents, voltages are induced in them.

It consists of stator and rotor windings. Induction motor works on the principle of faraday’s laws of electromagnetic induction. Write the principle of operation of 3 phase induction motor. In motoring mode, armature induced emf is known as the back emf to stress the fact that it opposes armature emf. No-load current produces flux and supplies iron loss and copper loss on no-load. What are the functions of no-load current in a transformer? (BE8254 important questions Basic Electrical and Instrumentation Engineering) If the secondary voltage is greater than primary value, the transformer is called step down transformer. What do you mean by step down transformer? The emf induced is known as statically induced emf. The coil remains stationary with respect to flux, but the flux through it changes with time. It is analogous to electric resistance.Īlnicos, chromium steels, copper–nickel alloy, nickel, cobalt, tungsten and aluminium. (BE8254 important questions Basic Electrical and Instrumentation Engineering)

The opposition offered by the magnetic circuit for the magnetic flux path is known as magnetic reluctance. Sample BE8254 important questions Basic Electrical and Instrumentation Engineering : Subject NameīASIC ELECTRICAL AND INSTRUMENTATION ENGINEERING BE8254 important questions Basic Electrical and Instrumentation EngineeringīE8254 important questions Basic Electrical and Instrumentation Engineering Regulation 2017 Anna University free download.īEIE Basic Electrical and Instrumentation Engineering important questions is provided to download for free in pdf.

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